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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/chrome_browser_main.h"
      6 
      7 #include <set>
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/at_exit.h"
     12 #include "base/bind.h"
     13 #include "base/command_line.h"
     14 #include "base/debug/crash_logging.h"
     15 #include "base/debug/debugger.h"
     16 #include "base/debug/trace_event.h"
     17 #include "base/files/file_path.h"
     18 #include "base/files/file_util.h"
     19 #include "base/metrics/field_trial.h"
     20 #include "base/metrics/histogram.h"
     21 #include "base/path_service.h"
     22 #include "base/prefs/json_pref_store.h"
     23 #include "base/prefs/pref_registry_simple.h"
     24 #include "base/prefs/pref_service.h"
     25 #include "base/prefs/pref_value_store.h"
     26 #include "base/prefs/scoped_user_pref_update.h"
     27 #include "base/process/process_info.h"
     28 #include "base/run_loop.h"
     29 #include "base/strings/string_number_conversions.h"
     30 #include "base/strings/string_piece.h"
     31 #include "base/strings/string_split.h"
     32 #include "base/strings/sys_string_conversions.h"
     33 #include "base/strings/utf_string_conversions.h"
     34 #include "base/sys_info.h"
     35 #include "base/threading/platform_thread.h"
     36 #include "base/time/time.h"
     37 #include "base/values.h"
     38 #include "build/build_config.h"
     39 #include "chrome/browser/about_flags.h"
     40 #include "chrome/browser/browser_process.h"
     41 #include "chrome/browser/browser_process_impl.h"
     42 #include "chrome/browser/browser_process_platform_part.h"
     43 #include "chrome/browser/browser_shutdown.h"
     44 #include "chrome/browser/chrome_browser_main_extra_parts.h"
     45 #include "chrome/browser/component_updater/cld_component_installer.h"
     46 #include "chrome/browser/component_updater/ev_whitelist_component_installer.h"
     47 #include "chrome/browser/component_updater/flash_component_installer.h"
     48 #include "chrome/browser/component_updater/recovery_component_installer.h"
     49 #include "chrome/browser/component_updater/swiftshader_component_installer.h"
     50 #include "chrome/browser/component_updater/widevine_cdm_component_installer.h"
     51 #include "chrome/browser/defaults.h"
     52 #include "chrome/browser/first_run/first_run.h"
     53 #include "chrome/browser/first_run/upgrade_util.h"
     54 #include "chrome/browser/google/google_search_counter.h"
     55 #include "chrome/browser/gpu/gl_string_manager.h"
     56 #include "chrome/browser/gpu/three_d_api_observer.h"
     57 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
     58 #include "chrome/browser/metrics/field_trial_synchronizer.h"
     59 #include "chrome/browser/metrics/thread_watcher.h"
     60 #include "chrome/browser/metrics/variations/variations_service.h"
     61 #include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
     62 #include "chrome/browser/net/chrome_net_log.h"
     63 #include "chrome/browser/net/crl_set_fetcher.h"
     64 #include "chrome/browser/notifications/desktop_notification_service.h"
     65 #include "chrome/browser/notifications/desktop_notification_service_factory.h"
     66 #include "chrome/browser/performance_monitor/performance_monitor.h"
     67 #include "chrome/browser/plugins/plugin_prefs.h"
     68 #include "chrome/browser/power/process_power_collector.h"
     69 #include "chrome/browser/pref_service_flags_storage.h"
     70 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
     71 #include "chrome/browser/prefs/command_line_pref_store.h"
     72 #include "chrome/browser/prefs/pref_metrics_service.h"
     73 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
     74 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service_factory.h"
     75 #include "chrome/browser/process_singleton.h"
     76 #include "chrome/browser/profiles/profile.h"
     77 #include "chrome/browser/profiles/profile_manager.h"
     78 #include "chrome/browser/profiles/profiles_state.h"
     79 #include "chrome/browser/shell_integration.h"
     80 #include "chrome/browser/translate/translate_service.h"
     81 #include "chrome/browser/ui/app_list/app_list_service.h"
     82 #include "chrome/browser/ui/browser.h"
     83 #include "chrome/browser/ui/browser_finder.h"
     84 #include "chrome/browser/ui/host_desktop.h"
     85 #include "chrome/browser/ui/startup/bad_flags_prompt.h"
     86 #include "chrome/browser/ui/startup/default_browser_prompt.h"
     87 #include "chrome/browser/ui/startup/startup_browser_creator.h"
     88 #include "chrome/browser/ui/uma_browsing_activity_observer.h"
     89 #include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
     90 #include "chrome/common/chrome_constants.h"
     91 #include "chrome/common/chrome_paths.h"
     92 #include "chrome/common/chrome_result_codes.h"
     93 #include "chrome/common/chrome_switches.h"
     94 #include "chrome/common/crash_keys.h"
     95 #include "chrome/common/env_vars.h"
     96 #include "chrome/common/logging_chrome.h"
     97 #include "chrome/common/net/net_resource_provider.h"
     98 #include "chrome/common/pref_names.h"
     99 #include "chrome/common/profiling.h"
    100 #include "chrome/grit/generated_resources.h"
    101 #include "chrome/installer/util/google_update_settings.h"
    102 #include "components/component_updater/component_updater_service.h"
    103 #include "components/google/core/browser/google_util.h"
    104 #include "components/language_usage_metrics/language_usage_metrics.h"
    105 #include "components/metrics/metrics_service.h"
    106 #include "components/metrics/profiler/tracking_synchronizer.h"
    107 #include "components/nacl/browser/nacl_browser.h"
    108 #include "components/rappor/rappor_service.h"
    109 #include "components/signin/core/common/profile_management_switches.h"
    110 #include "components/startup_metric_utils/startup_metric_utils.h"
    111 #include "components/translate/content/common/cld_data_source.h"
    112 #include "components/translate/core/browser/translate_download_manager.h"
    113 #include "components/variations/variations_http_header_provider.h"
    114 #include "content/public/browser/browser_thread.h"
    115 #include "content/public/browser/notification_observer.h"
    116 #include "content/public/browser/notification_registrar.h"
    117 #include "content/public/browser/notification_service.h"
    118 #include "content/public/browser/notification_types.h"
    119 #include "content/public/browser/site_instance.h"
    120 #include "content/public/common/content_client.h"
    121 #include "content/public/common/content_switches.h"
    122 #include "content/public/common/main_function_params.h"
    123 #include "grit/platform_locale_settings.h"
    124 #include "net/base/net_module.h"
    125 #include "net/base/sdch_manager.h"
    126 #include "net/cookies/cookie_monster.h"
    127 #include "net/http/http_network_layer.h"
    128 #include "net/http/http_stream_factory.h"
    129 #include "net/url_request/url_request.h"
    130 #include "ui/base/l10n/l10n_util.h"
    131 #include "ui/base/layout.h"
    132 #include "ui/base/resource/resource_bundle.h"
    133 #include "ui/strings/grit/app_locale_settings.h"
    134 
    135 #if defined(OS_ANDROID)
    136 #include "chrome/browser/metrics/thread_watcher_android.h"
    137 #else
    138 #include "chrome/browser/feedback/feedback_profile_observer.h"
    139 #endif
    140 
    141 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
    142 #include "chrome/browser/first_run/upgrade_util_linux.h"
    143 #include "chrome/browser/sxs_linux.h"
    144 #endif
    145 
    146 #if defined(OS_CHROMEOS)
    147 #include "chrome/browser/chromeos/settings/cros_settings.h"
    148 #include "chromeos/chromeos_switches.h"
    149 #include "chromeos/settings/cros_settings_names.h"
    150 #endif
    151 
    152 // TODO(port): several win-only methods have been pulled out of this, but
    153 // BrowserMain() as a whole needs to be broken apart so that it's usable by
    154 // other platforms. For now, it's just a stub. This is a serious work in
    155 // progress and should not be taken as an indication of a real refactoring.
    156 
    157 #if defined(OS_WIN)
    158 #include "base/environment.h"  // For PreRead experiment.
    159 #include "base/win/windows_version.h"
    160 #include "chrome/browser/browser_util_win.h"
    161 #include "chrome/browser/chrome_browser_main_win.h"
    162 #include "chrome/browser/chrome_select_file_dialog_factory_win.h"
    163 #include "chrome/browser/component_updater/sw_reporter_installer_win.h"
    164 #include "chrome/browser/first_run/try_chrome_dialog_view.h"
    165 #include "chrome/browser/first_run/upgrade_util_win.h"
    166 #include "chrome/browser/ui/network_profile_bubble.h"
    167 #include "chrome/installer/util/helper.h"
    168 #include "chrome/installer/util/install_util.h"
    169 #include "chrome/installer/util/shell_util.h"
    170 #include "net/base/net_util.h"
    171 #include "ui/base/l10n/l10n_util_win.h"
    172 #include "ui/gfx/win/dpi.h"
    173 #include "ui/shell_dialogs/select_file_dialog.h"
    174 #endif  // defined(OS_WIN)
    175 
    176 #if defined(OS_MACOSX)
    177 #include <Security/Security.h>
    178 
    179 #include "base/mac/scoped_nsautorelease_pool.h"
    180 #include "chrome/browser/mac/keystone_glue.h"
    181 #endif
    182 
    183 #if !defined(DISABLE_NACL)
    184 #include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
    185 #include "components/nacl/browser/nacl_process_host.h"
    186 #endif
    187 
    188 #if defined(ENABLE_EXTENSIONS)
    189 #include "chrome/browser/extensions/startup_helper.h"
    190 #include "extensions/browser/extension_protocols.h"
    191 #endif
    192 
    193 #if defined(ENABLE_FULL_PRINTING) && !defined(OFFICIAL_BUILD)
    194 #include "printing/printed_document.h"
    195 #endif
    196 
    197 #if defined(ENABLE_RLZ)
    198 #include "chrome/browser/rlz/rlz.h"
    199 #endif
    200 
    201 #if defined(ENABLE_WEBRTC)
    202 #include "chrome/browser/media/webrtc_log_util.h"
    203 #endif
    204 
    205 #if defined(USE_AURA)
    206 #include "ui/aura/env.h"
    207 #endif
    208 
    209 using content::BrowserThread;
    210 
    211 namespace {
    212 
    213 // This function provides some ways to test crash and assertion handling
    214 // behavior of the program.
    215 void HandleTestParameters(const CommandLine& command_line) {
    216   // This parameter causes an assertion.
    217   if (command_line.HasSwitch(switches::kBrowserAssertTest)) {
    218     DCHECK(false);
    219   }
    220 
    221   // This parameter causes a null pointer crash (crash reporter trigger).
    222   if (command_line.HasSwitch(switches::kBrowserCrashTest)) {
    223     int* bad_pointer = NULL;
    224     *bad_pointer = 0;
    225   }
    226 }
    227 
    228 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
    229 void AddFirstRunNewTabs(StartupBrowserCreator* browser_creator,
    230                         const std::vector<GURL>& new_tabs) {
    231   for (std::vector<GURL>::const_iterator it = new_tabs.begin();
    232        it != new_tabs.end(); ++it) {
    233     if (it->is_valid())
    234       browser_creator->AddFirstRunTab(*it);
    235   }
    236 }
    237 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
    238 
    239 // Returns the new local state object, guaranteed non-NULL.
    240 // |local_state_task_runner| must be a shutdown-blocking task runner.
    241 PrefService* InitializeLocalState(
    242     base::SequencedTaskRunner* local_state_task_runner,
    243     const CommandLine& parsed_command_line) {
    244   TRACE_EVENT0("startup", "ChromeBrowserMainParts::InitializeLocalState")
    245   base::FilePath local_state_path;
    246   PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path);
    247   bool local_state_file_exists = base::PathExists(local_state_path);
    248 
    249   // Load local state.  This includes the application locale so we know which
    250   // locale dll to load.  This also causes local state prefs to be registered.
    251   PrefService* local_state = g_browser_process->local_state();
    252   DCHECK(local_state);
    253 
    254 #if defined(OS_WIN)
    255   if (first_run::IsChromeFirstRun()) {
    256     // During first run we read the google_update registry key to find what
    257     // language the user selected when downloading the installer. This
    258     // becomes our default language in the prefs.
    259     // Other platforms obey the system locale.
    260     base::string16 install_lang;
    261     if (GoogleUpdateSettings::GetLanguage(&install_lang)) {
    262       local_state->SetString(prefs::kApplicationLocale,
    263                              base::UTF16ToASCII(install_lang));
    264     }
    265   }
    266 #endif  // defined(OS_WIN)
    267 
    268   // If the local state file for the current profile doesn't exist and the
    269   // parent profile command line flag is present, then we should inherit some
    270   // local state from the parent profile.
    271   // Checking that the local state file for the current profile doesn't exist
    272   // is the most robust way to determine whether we need to inherit or not
    273   // since the parent profile command line flag can be present even when the
    274   // current profile is not a new one, and in that case we do not want to
    275   // inherit and reset the user's setting.
    276   //
    277   // TODO(mnissler): We should probably just instantiate a
    278   // JSONPrefStore here instead of an entire PrefService. Once this is
    279   // addressed, the call to browser_prefs::RegisterLocalState can move
    280   // to chrome_prefs::CreateLocalState.
    281   if (!local_state_file_exists &&
    282       parsed_command_line.HasSwitch(switches::kParentProfile)) {
    283     base::FilePath parent_profile =
    284         parsed_command_line.GetSwitchValuePath(switches::kParentProfile);
    285     scoped_refptr<PrefRegistrySimple> registry = new PrefRegistrySimple();
    286     scoped_ptr<PrefService> parent_local_state(
    287         chrome_prefs::CreateLocalState(
    288             parent_profile,
    289             local_state_task_runner,
    290             g_browser_process->policy_service(),
    291             registry,
    292             false));
    293     registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
    294     // Right now, we only inherit the locale setting from the parent profile.
    295     local_state->SetString(
    296         prefs::kApplicationLocale,
    297         parent_local_state->GetString(prefs::kApplicationLocale));
    298   }
    299 
    300 #if defined(OS_CHROMEOS)
    301   if (parsed_command_line.HasSwitch(chromeos::switches::kLoginManager)) {
    302     std::string owner_locale = local_state->GetString(prefs::kOwnerLocale);
    303     // Ensure that we start with owner's locale.
    304     if (!owner_locale.empty() &&
    305         local_state->GetString(prefs::kApplicationLocale) != owner_locale &&
    306         !local_state->IsManagedPreference(prefs::kApplicationLocale)) {
    307       local_state->SetString(prefs::kApplicationLocale, owner_locale);
    308     }
    309   }
    310 #endif
    311 
    312   return local_state;
    313 }
    314 
    315 // Initializes the primary profile, possibly doing some user prompting to pick
    316 // a fallback profile. Returns the newly created profile, or NULL if startup
    317 // should not continue.
    318 Profile* CreatePrimaryProfile(const content::MainFunctionParams& parameters,
    319                               const base::FilePath& user_data_dir,
    320                               const CommandLine& parsed_command_line) {
    321   TRACE_EVENT0("startup", "ChromeBrowserMainParts::CreateProfile")
    322   base::Time start = base::Time::Now();
    323   if (profiles::IsMultipleProfilesEnabled() &&
    324       parsed_command_line.HasSwitch(switches::kProfileDirectory)) {
    325     g_browser_process->local_state()->SetString(prefs::kProfileLastUsed,
    326         parsed_command_line.GetSwitchValueASCII(switches::kProfileDirectory));
    327     // Clear kProfilesLastActive since the user only wants to launch a specific
    328     // profile.
    329     ListPrefUpdate update(g_browser_process->local_state(),
    330                           prefs::kProfilesLastActive);
    331     base::ListValue* profile_list = update.Get();
    332     profile_list->Clear();
    333   }
    334 
    335   Profile* profile = NULL;
    336 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
    337   // On ChromeOS and Android the ProfileManager will use the same path as the
    338   // one we got passed. GetActiveUserProfile will therefore use the correct path
    339   // automatically.
    340   DCHECK_EQ(user_data_dir.value(),
    341             g_browser_process->profile_manager()->user_data_dir().value());
    342   profile = ProfileManager::GetActiveUserProfile();
    343 #else
    344   base::FilePath profile_path =
    345       GetStartupProfilePath(user_data_dir, parsed_command_line);
    346 
    347   // Without NewAvatarMenu, replace guest with any existing profile.
    348   if (!switches::IsNewAvatarMenu() &&
    349       profile_path == ProfileManager::GetGuestProfilePath()) {
    350     profile_path = g_browser_process->profile_manager()->GetProfileInfoCache().
    351         GetPathOfProfileAtIndex(0);
    352   }
    353   profile = g_browser_process->profile_manager()->GetProfile(
    354       profile_path);
    355 
    356   // If we're using the --new-profile-management flag and this profile is
    357   // signed out, then we should show the user manager instead. By switching
    358   // the active profile to the guest profile we ensure that no
    359   // browser windows will be opened for the guest profile.
    360   if (switches::IsNewProfileManagement() && !profile->IsGuestSession()) {
    361     ProfileInfoCache& cache =
    362         g_browser_process->profile_manager()->GetProfileInfoCache();
    363     size_t profile_index = cache.GetIndexOfProfileWithPath(profile_path);
    364 
    365     if (cache.ProfileIsSigninRequiredAtIndex(profile_index))
    366       profile = g_browser_process->profile_manager()->GetProfile(
    367           ProfileManager::GetGuestProfilePath());
    368   }
    369 #endif
    370   if (profile) {
    371     UMA_HISTOGRAM_LONG_TIMES(
    372         "Startup.CreateFirstProfile", base::Time::Now() - start);
    373     return profile;
    374   }
    375 
    376 #if !defined(OS_WIN)
    377   // TODO(port): fix this.  See comments near the definition of
    378   // user_data_dir.  It is better to CHECK-fail here than it is to
    379   // silently exit because of missing code in the above test.
    380   CHECK(profile) << "Cannot get default profile.";
    381 #endif
    382 
    383   return NULL;
    384 }
    385 
    386 #if defined(OS_MACOSX)
    387 OSStatus KeychainCallback(SecKeychainEvent keychain_event,
    388                           SecKeychainCallbackInfo* info, void* context) {
    389   return noErr;
    390 }
    391 #endif
    392 
    393 void RegisterComponentsForUpdate() {
    394   component_updater::ComponentUpdateService* cus =
    395       g_browser_process->component_updater();
    396 
    397   // Registration can be before or after cus->Start() so it is ok to post
    398   // a task to the UI thread to do registration once you done the necessary
    399   // file IO to know you existing component version.
    400 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
    401   RegisterRecoveryComponent(cus, g_browser_process->local_state());
    402   RegisterPepperFlashComponent(cus);
    403   RegisterSwiftShaderComponent(cus);
    404   RegisterWidevineCdmComponent(cus);
    405 #if !defined(DISABLE_NACL)
    406   g_browser_process->pnacl_component_installer()->RegisterPnaclComponent(cus);
    407 #endif
    408 #endif
    409 
    410   if (translate::CldDataSource::ShouldRegisterForComponentUpdates()) {
    411     RegisterCldComponent(cus);
    412   }
    413 
    414   base::FilePath path;
    415   if (PathService::Get(chrome::DIR_USER_DATA, &path)) {
    416 #if defined(OS_ANDROID)
    417     // The CRLSet component was enabled for some releases. This code attempts to
    418     // delete it from the local disk of those how may have downloaded it.
    419     g_browser_process->crl_set_fetcher()->DeleteFromDisk(path);
    420 #elif !defined(OS_CHROMEOS)
    421     // CRLSetFetcher attempts to load a CRL set from either the local disk or
    422     // network.
    423     // For Chrome OS this registration is delayed until user login.
    424     g_browser_process->crl_set_fetcher()->StartInitialLoad(cus, path);
    425 #endif
    426   }
    427 
    428 #if !defined(OS_ANDROID)
    429   // Android does not currently have the EV indicator. No need to get the
    430   // EV certs whitelist on Android, then.
    431   RegisterEVWhitelistComponent(cus);
    432 #endif
    433 
    434 #if defined(OS_WIN)
    435   RegisterSwReporterComponent(cus, g_browser_process->local_state());
    436 #endif
    437 
    438   cus->Start();
    439 }
    440 
    441 #if !defined(OS_ANDROID)
    442 bool ProcessSingletonNotificationCallback(
    443     const CommandLine& command_line,
    444     const base::FilePath& current_directory) {
    445   // Drop the request if the browser process is already in shutdown path.
    446   if (!g_browser_process || g_browser_process->IsShuttingDown())
    447     return false;
    448 
    449   if (command_line.HasSwitch(switches::kOriginalProcessStartTime)) {
    450     std::string start_time_string =
    451         command_line.GetSwitchValueASCII(switches::kOriginalProcessStartTime);
    452     int64 remote_start_time;
    453     if (base::StringToInt64(start_time_string, &remote_start_time)) {
    454       base::TimeDelta elapsed =
    455           base::Time::Now() - base::Time::FromInternalValue(remote_start_time);
    456       if (command_line.HasSwitch(switches::kFastStart)) {
    457         UMA_HISTOGRAM_LONG_TIMES(
    458             "Startup.WarmStartTimeFromRemoteProcessStartFast", elapsed);
    459       } else {
    460         UMA_HISTOGRAM_LONG_TIMES(
    461             "Startup.WarmStartTimeFromRemoteProcessStart", elapsed);
    462       }
    463     }
    464   }
    465 
    466   g_browser_process->platform_part()->PlatformSpecificCommandLineProcessing(
    467       command_line);
    468 
    469   base::FilePath user_data_dir =
    470       g_browser_process->profile_manager()->user_data_dir();
    471   base::FilePath startup_profile_dir =
    472       GetStartupProfilePath(user_data_dir, command_line);
    473 
    474   StartupBrowserCreator::ProcessCommandLineAlreadyRunning(
    475       command_line, current_directory, startup_profile_dir);
    476   return true;
    477 }
    478 #endif  // !defined(OS_ANDROID)
    479 
    480 void LaunchDevToolsHandlerIfNeeded(const CommandLine& command_line) {
    481   if (command_line.HasSwitch(::switches::kRemoteDebuggingPort)) {
    482     std::string port_str =
    483         command_line.GetSwitchValueASCII(::switches::kRemoteDebuggingPort);
    484     int port;
    485     if (base::StringToInt(port_str, &port) && port >= 0 && port < 65535) {
    486       g_browser_process->CreateDevToolsHttpProtocolHandler(
    487           chrome::HOST_DESKTOP_TYPE_NATIVE,
    488           "127.0.0.1",
    489           port);
    490     } else {
    491       DLOG(WARNING) << "Invalid http debugger port number " << port;
    492     }
    493   }
    494 }
    495 
    496 // Heap allocated class that listens for first page load, kicks off stat
    497 // recording and then deletes itself.
    498 class LoadCompleteListener : public content::NotificationObserver {
    499  public:
    500   LoadCompleteListener() {
    501     registrar_.Add(this,
    502                    content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
    503                    content::NotificationService::AllSources());
    504   }
    505   virtual ~LoadCompleteListener() {}
    506 
    507   // content::NotificationObserver implementation.
    508   virtual void Observe(int type,
    509                        const content::NotificationSource& source,
    510                        const content::NotificationDetails& details) OVERRIDE {
    511     DCHECK_EQ(content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME, type);
    512     startup_metric_utils::OnInitialPageLoadComplete();
    513     delete this;
    514   }
    515 
    516  private:
    517   content::NotificationRegistrar registrar_;
    518   DISALLOW_COPY_AND_ASSIGN(LoadCompleteListener);
    519 };
    520 
    521 }  // namespace
    522 
    523 namespace chrome_browser {
    524 
    525 // This error message is not localized because we failed to load the
    526 // localization data files.
    527 #if defined(OS_WIN)
    528 const char kMissingLocaleDataTitle[] = "Missing File Error";
    529 #endif
    530 
    531 #if defined(OS_WIN)
    532 // TODO(port) This should be used on Linux Aura as well. http://crbug.com/338969
    533 const char kMissingLocaleDataMessage[] =
    534     "Unable to find locale data files. Please reinstall.";
    535 #endif
    536 
    537 }  // namespace chrome_browser
    538 
    539 // BrowserMainParts ------------------------------------------------------------
    540 
    541 // static
    542 bool ChromeBrowserMainParts::disable_enforcing_cookie_policies_for_tests_ =
    543     false;
    544 
    545 ChromeBrowserMainParts::ChromeBrowserMainParts(
    546     const content::MainFunctionParams& parameters)
    547     : parameters_(parameters),
    548       parsed_command_line_(parameters.command_line),
    549       result_code_(content::RESULT_CODE_NORMAL_EXIT),
    550       startup_watcher_(new StartupTimeBomb()),
    551       shutdown_watcher_(new ShutdownWatcherHelper()),
    552       browser_field_trials_(parameters.command_line),
    553       profile_(NULL),
    554       run_message_loop_(true),
    555       notify_result_(ProcessSingleton::PROCESS_NONE),
    556       local_state_(NULL),
    557       restart_last_session_(false) {
    558   // If we're running tests (ui_task is non-null).
    559   if (parameters.ui_task)
    560     browser_defaults::enable_help_app = false;
    561 
    562   // Chrome disallows cookies by default. All code paths that want to use
    563   // cookies need to go through one of Chrome's URLRequestContexts which have
    564   // a ChromeNetworkDelegate attached that selectively allows cookies again.
    565   if (!disable_enforcing_cookie_policies_for_tests_)
    566     net::URLRequest::SetDefaultCookiePolicyToBlock();
    567 }
    568 
    569 ChromeBrowserMainParts::~ChromeBrowserMainParts() {
    570   for (int i = static_cast<int>(chrome_extra_parts_.size())-1; i >= 0; --i)
    571     delete chrome_extra_parts_[i];
    572   chrome_extra_parts_.clear();
    573 }
    574 
    575 // This will be called after the command-line has been mutated by about:flags
    576 void ChromeBrowserMainParts::SetupMetricsAndFieldTrials() {
    577   TRACE_EVENT0("startup", "ChromeBrowserMainParts::SetupMetricsAndFieldTrials");
    578   // Must initialize metrics after labs have been converted into switches,
    579   // but before field trials are set up (so that client ID is available for
    580   // one-time randomized field trials).
    581 
    582   // Initialize FieldTrialList to support FieldTrials that use one-time
    583   // randomization.
    584   metrics::MetricsService* metrics = browser_process_->metrics_service();
    585   field_trial_list_.reset(
    586       new base::FieldTrialList(metrics->CreateEntropyProvider().release()));
    587 
    588   const CommandLine* command_line = CommandLine::ForCurrentProcess();
    589   if (command_line->HasSwitch(switches::kEnableBenchmarking))
    590     base::FieldTrial::EnableBenchmarking();
    591 
    592   // Ensure any field trials specified on the command line are initialized.
    593   if (command_line->HasSwitch(switches::kForceFieldTrials)) {
    594     std::set<std::string> unforceable_field_trials;
    595 #if defined(OFFICIAL_BUILD)
    596     unforceable_field_trials.insert("SettingsEnforcement");
    597 #endif  // defined(OFFICIAL_BUILD)
    598 
    599     // Create field trials without activating them, so that this behaves in a
    600     // consistent manner with field trials created from the server.
    601     bool result = base::FieldTrialList::CreateTrialsFromString(
    602         command_line->GetSwitchValueASCII(switches::kForceFieldTrials),
    603         base::FieldTrialList::DONT_ACTIVATE_TRIALS,
    604         unforceable_field_trials);
    605     CHECK(result) << "Invalid --" << switches::kForceFieldTrials
    606                   << " list specified.";
    607   }
    608   if (command_line->HasSwitch(switches::kForceVariationIds)) {
    609     // Create default variation ids which will always be included in the
    610     // X-Client-Data request header.
    611     variations::VariationsHttpHeaderProvider* provider =
    612         variations::VariationsHttpHeaderProvider::GetInstance();
    613     bool result = provider->SetDefaultVariationIds(
    614         command_line->GetSwitchValueASCII(switches::kForceVariationIds));
    615     CHECK(result) << "Invalid --" << switches::kForceVariationIds
    616                   << " list specified.";
    617   }
    618   chrome_variations::VariationsService* variations_service =
    619       browser_process_->variations_service();
    620   if (variations_service)
    621     variations_service->CreateTrialsFromSeed();
    622 
    623   // This must be called after |local_state_| is initialized.
    624   browser_field_trials_.SetupFieldTrials(
    625       base::Time::FromTimeT(metrics->GetInstallDate()), local_state_);
    626 
    627   // Initialize FieldTrialSynchronizer system. This is a singleton and is used
    628   // for posting tasks via base::Bind. Its deleted when it goes out of scope.
    629   // Even though base::Bind does AddRef and Release, the object will not be
    630   // deleted after the Task is executed.
    631   field_trial_synchronizer_ = new FieldTrialSynchronizer();
    632 
    633   // Now that field trials have been created, initializes metrics recording.
    634   metrics->InitializeMetricsRecordingState();
    635 }
    636 
    637 // ChromeBrowserMainParts: |SetupMetricsAndFieldTrials()| related --------------
    638 
    639 void ChromeBrowserMainParts::StartMetricsRecording() {
    640   TRACE_EVENT0("startup", "ChromeBrowserMainParts::StartMetricsRecording");
    641   metrics::MetricsService* metrics = g_browser_process->metrics_service();
    642 
    643   const bool only_do_metrics_recording =
    644       parsed_command_line_.HasSwitch(switches::kMetricsRecordingOnly) ||
    645       parsed_command_line_.HasSwitch(switches::kEnableBenchmarking);
    646   if (only_do_metrics_recording) {
    647     // If we're testing then we don't care what the user preference is, we turn
    648     // on recording, but not reporting, otherwise tests fail.
    649     metrics->StartRecordingForTests();
    650     return;
    651   }
    652 
    653   metrics->CheckForClonedInstall(
    654       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));
    655   const bool metrics_enabled = metrics->StartIfMetricsReportingEnabled();
    656   // TODO(asvitkine): Since this function is not run on Android, RAPPOR is
    657   // currently disabled there. http://crbug.com/370041
    658   browser_process_->rappor_service()->Start(
    659       browser_process_->system_request_context(),
    660       metrics_enabled);
    661 }
    662 
    663 void ChromeBrowserMainParts::RecordBrowserStartupTime() {
    664   // Don't record any metrics if UI was displayed before this point e.g.
    665   // warning dialogs.
    666   if (startup_metric_utils::WasNonBrowserUIDisplayed())
    667     return;
    668 
    669 #if defined(OS_ANDROID)
    670   // On Android the first run is handled in Java code, and the C++ side of
    671   // Chrome doesn't know if this is the first run. This will cause some
    672   // inaccuracy in the UMA statistics, but this should be minor (first runs are
    673   // rare).
    674   bool is_first_run = false;
    675 #else
    676   bool is_first_run = first_run::IsChromeFirstRun();
    677 #endif
    678 
    679 // CurrentProcessInfo::CreationTime() is currently only implemented on some
    680 // platforms.
    681 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
    682   const base::Time process_creation_time =
    683       base::CurrentProcessInfo::CreationTime();
    684 
    685   if (!is_first_run && !process_creation_time.is_null()) {
    686     base::TimeDelta delay = base::Time::Now() - process_creation_time;
    687     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserMessageLoopStartTime", delay);
    688   }
    689 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
    690 
    691   // Record collected startup metrics.
    692   startup_metric_utils::OnBrowserStartupComplete(is_first_run);
    693 
    694   // Deletes self.
    695   new LoadCompleteListener();
    696 }
    697 
    698 // -----------------------------------------------------------------------------
    699 // TODO(viettrungluu): move more/rest of BrowserMain() into BrowserMainParts.
    700 
    701 #if defined(OS_WIN)
    702 #define DLLEXPORT __declspec(dllexport)
    703 
    704 // We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
    705 extern "C" {
    706 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded();
    707 }
    708 
    709 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
    710   // Need an instance of AtExitManager to handle singleton creations and
    711   // deletions.  We need this new instance because, the old instance created
    712   // in ChromeMain() got destructed when the function returned.
    713   base::AtExitManager exit_manager;
    714   upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
    715 }
    716 #endif
    717 
    718 // content::BrowserMainParts implementation ------------------------------------
    719 
    720 void ChromeBrowserMainParts::PreEarlyInitialization() {
    721   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreEarlyInitialization");
    722   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
    723     chrome_extra_parts_[i]->PreEarlyInitialization();
    724 }
    725 
    726 void ChromeBrowserMainParts::PostEarlyInitialization() {
    727   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostEarlyInitialization");
    728   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
    729     chrome_extra_parts_[i]->PostEarlyInitialization();
    730 }
    731 
    732 void ChromeBrowserMainParts::ToolkitInitialized() {
    733   TRACE_EVENT0("startup", "ChromeBrowserMainParts::ToolkitInitialized");
    734   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
    735     chrome_extra_parts_[i]->ToolkitInitialized();
    736 }
    737 
    738 void ChromeBrowserMainParts::PreMainMessageLoopStart() {
    739   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopStart");
    740   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
    741     chrome_extra_parts_[i]->PreMainMessageLoopStart();
    742 }
    743 
    744 void ChromeBrowserMainParts::PostMainMessageLoopStart() {
    745   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopStart");
    746   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
    747     chrome_extra_parts_[i]->PostMainMessageLoopStart();
    748 }
    749 
    750 int ChromeBrowserMainParts::PreCreateThreads() {
    751   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreads");
    752   result_code_ = PreCreateThreadsImpl();
    753 
    754   if (result_code_ == content::RESULT_CODE_NORMAL_EXIT) {
    755 #if !defined(OS_ANDROID)
    756     // These members must be initialized before exiting this function normally.
    757     DCHECK(master_prefs_.get());
    758     DCHECK(browser_creator_.get());
    759 #endif
    760     for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
    761       chrome_extra_parts_[i]->PreCreateThreads();
    762   }
    763 
    764   return result_code_;
    765 }
    766 
    767 int ChromeBrowserMainParts::PreCreateThreadsImpl() {
    768   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreadsImpl")
    769   run_message_loop_ = false;
    770 #if !defined(OS_ANDROID)
    771   chrome::MaybeShowInvalidUserDataDirWarningDialog();
    772 #endif
    773   if (!PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_))
    774     return chrome::RESULT_CODE_MISSING_DATA;
    775 
    776   // Force MediaCaptureDevicesDispatcher to be created on UI thread.
    777   MediaCaptureDevicesDispatcher::GetInstance();
    778 
    779   // Android's first run is done in Java instead of native.
    780 #if !defined(OS_ANDROID)
    781   process_singleton_.reset(new ChromeProcessSingleton(
    782       user_data_dir_, base::Bind(&ProcessSingletonNotificationCallback)));
    783 
    784   // Cache first run state early.
    785   first_run::IsChromeFirstRun();
    786 #endif
    787 
    788   scoped_refptr<base::SequencedTaskRunner> local_state_task_runner =
    789       JsonPrefStore::GetTaskRunnerForFile(
    790           base::FilePath(chrome::kLocalStorePoolName),
    791           BrowserThread::GetBlockingPool());
    792 
    793   {
    794     TRACE_EVENT0("startup",
    795       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitBrowswerProcessImpl");
    796     browser_process_.reset(new BrowserProcessImpl(local_state_task_runner.get(),
    797                                                   parsed_command_line()));
    798   }
    799 
    800   if (parsed_command_line().HasSwitch(switches::kEnableProfiling)) {
    801     TRACE_EVENT0("startup",
    802         "ChromeBrowserMainParts::PreCreateThreadsImpl:InitProfiling");
    803     // User wants to override default tracking status.
    804     std::string flag =
    805       parsed_command_line().GetSwitchValueASCII(switches::kEnableProfiling);
    806     // Default to basic profiling (no parent child support).
    807     tracked_objects::ThreadData::Status status =
    808           tracked_objects::ThreadData::PROFILING_ACTIVE;
    809     if (flag.compare("0") != 0)
    810       status = tracked_objects::ThreadData::DEACTIVATED;
    811     else if (flag.compare("child") != 0)
    812       status = tracked_objects::ThreadData::PROFILING_CHILDREN_ACTIVE;
    813     tracked_objects::ThreadData::InitializeAndSetTrackingStatus(status);
    814   }
    815 
    816   if (parsed_command_line().HasSwitch(switches::kProfilingOutputFile)) {
    817     tracking_objects_.set_output_file_path(
    818         parsed_command_line().GetSwitchValuePath(
    819             switches::kProfilingOutputFile));
    820   }
    821 
    822   local_state_ = InitializeLocalState(
    823       local_state_task_runner.get(), parsed_command_line());
    824 
    825 #if !defined(OS_ANDROID)
    826   // These members must be initialized before returning from this function.
    827   master_prefs_.reset(new first_run::MasterPrefs);
    828   // Android doesn't use StartupBrowserCreator.
    829   browser_creator_.reset(new StartupBrowserCreator);
    830   // TODO(yfriedman): Refactor Android to re-use UMABrowsingActivityObserver
    831   chrome::UMABrowsingActivityObserver::Init();
    832 #endif
    833 
    834 #if !defined(OS_CHROMEOS)
    835   // Convert active labs into switches. This needs to be done before
    836   // ResourceBundle::InitSharedInstanceWithLocale as some loaded resources are
    837   // affected by experiment flags (--touch-optimized-ui in particular).
    838   // On ChromeOS system level flags are applied from the device settings from
    839   // the session manager.
    840   {
    841     TRACE_EVENT0("startup",
    842         "ChromeBrowserMainParts::PreCreateThreadsImpl:ConvertFlags");
    843     about_flags::PrefServiceFlagsStorage flags_storage_(
    844         g_browser_process->local_state());
    845     about_flags::ConvertFlagsToSwitches(&flags_storage_,
    846                                         CommandLine::ForCurrentProcess(),
    847                                         about_flags::kAddSentinels);
    848   }
    849 #endif
    850 
    851   local_state_->UpdateCommandLinePrefStore(
    852       new CommandLinePrefStore(CommandLine::ForCurrentProcess()));
    853 
    854   // Reset the command line in the crash report details, since we may have
    855   // just changed it to include experiments.
    856   crash_keys::SetSwitchesFromCommandLine(CommandLine::ForCurrentProcess());
    857 
    858   // Mac starts it earlier in |PreMainMessageLoopStart()| (because it is
    859   // needed when loading the MainMenu.nib and the language doesn't depend on
    860   // anything since it comes from Cocoa.
    861 #if defined(OS_MACOSX)
    862   std::string locale =
    863       parameters().ui_task ? "en-US" : l10n_util::GetLocaleOverride();
    864   browser_process_->SetApplicationLocale(locale);
    865 #else
    866   const std::string locale =
    867       local_state_->GetString(prefs::kApplicationLocale);
    868 
    869   // On a POSIX OS other than ChromeOS, the parameter that is passed to the
    870   // method InitSharedInstance is ignored.
    871 
    872   TRACE_EVENT_BEGIN0("startup",
    873       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
    874   const std::string loaded_locale =
    875       ui::ResourceBundle::InitSharedInstanceWithLocale(
    876           locale, NULL, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
    877   TRACE_EVENT_END0("startup",
    878       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
    879 
    880   if (loaded_locale.empty() &&
    881       !parsed_command_line().HasSwitch(switches::kNoErrorDialogs)) {
    882     ShowMissingLocaleMessageBox();
    883     return chrome::RESULT_CODE_MISSING_DATA;
    884   }
    885   CHECK(!loaded_locale.empty()) << "Locale could not be found for " << locale;
    886   browser_process_->SetApplicationLocale(loaded_locale);
    887 
    888   base::FilePath resources_pack_path;
    889   PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
    890   {
    891     TRACE_EVENT0("startup",
    892         "ChromeBrowserMainParts::PreCreateThreadsImpl:AddDataPack");
    893     ResourceBundle::GetSharedInstance().AddDataPackFromPath(
    894         resources_pack_path, ui::SCALE_FACTOR_NONE);
    895   }
    896 #endif  // defined(OS_MACOSX)
    897 
    898   // Android does first run in Java instead of native.
    899   // Chrome OS has its own out-of-box-experience code.
    900 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
    901   // On first run, we need to process the predictor preferences before the
    902   // browser's profile_manager object is created, but after ResourceBundle
    903   // is initialized.
    904   if (first_run::IsChromeFirstRun()) {
    905     first_run::ProcessMasterPreferencesResult pmp_result =
    906         first_run::ProcessMasterPreferences(user_data_dir_,
    907                                             master_prefs_.get());
    908     if (pmp_result == first_run::EULA_EXIT_NOW)
    909       return chrome::RESULT_CODE_EULA_REFUSED;
    910 
    911     if (!parsed_command_line().HasSwitch(switches::kApp) &&
    912         !parsed_command_line().HasSwitch(switches::kAppId) &&
    913         !parsed_command_line().HasSwitch(switches::kShowAppList)) {
    914       AddFirstRunNewTabs(browser_creator_.get(), master_prefs_->new_tabs);
    915     }
    916 
    917     // TODO(macourteau): refactor preferences that are copied from
    918     // master_preferences into local_state, as a "local_state" section in
    919     // master preferences. If possible, a generic solution would be preferred
    920     // over a copy one-by-one of specific preferences. Also see related TODO
    921     // in first_run.h.
    922 
    923     // Store the initial VariationsService seed in local state, if it exists
    924     // in master prefs.
    925     if (!master_prefs_->variations_seed.empty()) {
    926       local_state_->SetString(prefs::kVariationsSeed,
    927                               master_prefs_->variations_seed);
    928       if (!master_prefs_->variations_seed_signature.empty()) {
    929         local_state_->SetString(prefs::kVariationsSeedSignature,
    930                                 master_prefs_->variations_seed_signature);
    931       }
    932       // Set the variation seed date to the current system time. If the user's
    933       // clock is incorrect, this may cause some field trial expiry checks to
    934       // not do the right thing until the next seed update from the server,
    935       // when this value will be updated.
    936       local_state_->SetInt64(prefs::kVariationsSeedDate,
    937                              base::Time::Now().ToInternalValue());
    938     }
    939 
    940     if (!master_prefs_->suppress_default_browser_prompt_for_version.empty()) {
    941       local_state_->SetString(
    942           prefs::kBrowserSuppressDefaultBrowserPrompt,
    943           master_prefs_->suppress_default_browser_prompt_for_version);
    944     }
    945 
    946     AppListService::Get(chrome::HOST_DESKTOP_TYPE_NATIVE)->HandleFirstRun();
    947   }
    948 #endif
    949 
    950 #if defined(OS_LINUX) || defined(OS_OPENBSD) || defined(OS_MACOSX)
    951   // Set the product channel for crash reports.
    952   base::debug::SetCrashKeyValue(crash_keys::kChannel,
    953       chrome::VersionInfo::GetVersionStringModifier());
    954 #endif
    955 
    956   // Initialize tracking synchronizer system.
    957   tracking_synchronizer_ = new metrics::TrackingSynchronizer();
    958 
    959 #if defined(OS_MACOSX)
    960   // Get the Keychain API to register for distributed notifications on the main
    961   // thread, which has a proper CFRunloop, instead of later on the I/O thread,
    962   // which doesn't. This ensures those notifications will get delivered
    963   // properly. See issue 37766.
    964   // (Note that the callback mask here is empty. I don't want to register for
    965   // any callbacks, I just want to initialize the mechanism.)
    966   SecKeychainAddCallback(&KeychainCallback, 0, NULL);
    967 #endif
    968 
    969 #if defined(OS_CHROMEOS)
    970   // Must be done after g_browser_process is constructed, before
    971   // SetupMetricsAndFieldTrials().
    972   chromeos::CrosSettings::Initialize();
    973 #endif
    974 
    975   // Now the command line has been mutated based on about:flags, we can setup
    976   // metrics and initialize field trials. The field trials are needed by
    977   // IOThread's initialization which happens in BrowserProcess:PreCreateThreads.
    978   SetupMetricsAndFieldTrials();
    979 
    980   // ChromeOS needs ResourceBundle::InitSharedInstance to be called before this.
    981   browser_process_->PreCreateThreads();
    982 
    983   return content::RESULT_CODE_NORMAL_EXIT;
    984 }
    985 
    986 void ChromeBrowserMainParts::PreMainMessageLoopRun() {
    987   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRun");
    988   result_code_ = PreMainMessageLoopRunImpl();
    989 
    990   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
    991     chrome_extra_parts_[i]->PreMainMessageLoopRun();
    992 }
    993 
    994 // PreMainMessageLoopRun calls these extra stages in the following order:
    995 //  PreMainMessageLoopRunImpl()
    996 //   ... initial setup, including browser_process_ setup.
    997 //   PreProfileInit()
    998 //   ... additional setup, including CreateProfile()
    999 //   PostProfileInit()
   1000 //   ... additional setup
   1001 //   PreBrowserStart()
   1002 //   ... browser_creator_->Start (OR parameters().ui_task->Run())
   1003 //   PostBrowserStart()
   1004 
   1005 void ChromeBrowserMainParts::PreProfileInit() {
   1006   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreProfileInit");
   1007 
   1008   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
   1009     chrome_extra_parts_[i]->PreProfileInit();
   1010 
   1011 #if !defined(OS_ANDROID)
   1012   // Initialize the feedback uploader so it can setup notifications for profile
   1013   // creation.
   1014   feedback::FeedbackProfileObserver::Initialize();
   1015 
   1016   ProfileManager* profile_manager = g_browser_process->profile_manager();
   1017 
   1018   // First check if any ephemeral profiles are left behind because of browser
   1019   // crash and schedule them for deletion and then proceed with getting the set
   1020   // of profiles to open.
   1021   ProfileInfoCache& profile_cache = profile_manager->GetProfileInfoCache();
   1022   size_t profiles_count = profile_cache.GetNumberOfProfiles();
   1023   std::vector<base::FilePath> profiles_to_delete;
   1024   for (size_t i = 0; i < profiles_count; ++i) {
   1025     if (profile_cache.ProfileIsEphemeralAtIndex(i))
   1026       profiles_to_delete.push_back(profile_cache.GetPathOfProfileAtIndex(i));
   1027   }
   1028 
   1029   if (profiles_to_delete.size()) {
   1030     for (size_t i = 0; i < profiles_to_delete.size(); ++i) {
   1031       profile_manager->ScheduleProfileForDeletion(
   1032           profiles_to_delete[i], ProfileManager::CreateCallback());
   1033     }
   1034     // Clean up stale profiles immediately after browser start.
   1035     BrowserThread::PostTask(
   1036         BrowserThread::FILE, FROM_HERE,
   1037         base::Bind(&ProfileManager::CleanUpStaleProfiles, profiles_to_delete));
   1038   }
   1039 #endif  // OS_ANDROID
   1040 }
   1041 
   1042 void ChromeBrowserMainParts::PostProfileInit() {
   1043   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostProfileInit");
   1044   LaunchDevToolsHandlerIfNeeded(parsed_command_line());
   1045   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
   1046     chrome_extra_parts_[i]->PostProfileInit();
   1047 }
   1048 
   1049 void ChromeBrowserMainParts::PreBrowserStart() {
   1050   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreBrowserStart");
   1051   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
   1052     chrome_extra_parts_[i]->PreBrowserStart();
   1053 
   1054   three_d_observer_.reset(new ThreeDAPIObserver());
   1055 }
   1056 
   1057 void ChromeBrowserMainParts::PostBrowserStart() {
   1058   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostBrowserStart");
   1059   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
   1060     chrome_extra_parts_[i]->PostBrowserStart();
   1061 #if !defined(OS_ANDROID)
   1062   // Allow ProcessSingleton to process messages.
   1063   process_singleton_->Unlock();
   1064 #endif
   1065 #if defined(ENABLE_WEBRTC)
   1066   // Set up a task to delete old WebRTC log files for all profiles. Use a delay
   1067   // to reduce the impact on startup time.
   1068   BrowserThread::PostDelayedTask(
   1069       BrowserThread::UI,
   1070       FROM_HERE,
   1071       base::Bind(&WebRtcLogUtil::DeleteOldWebRtcLogFilesForAllProfiles),
   1072       base::TimeDelta::FromMinutes(1));
   1073 #endif
   1074 }
   1075 
   1076 int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
   1077   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");
   1078   // Android updates the metrics service dynamically depending on whether the
   1079   // application is in the foreground or not. Do not start here.
   1080 #if !defined(OS_ANDROID)
   1081   // Now that the file thread has been started, start recording.
   1082   StartMetricsRecording();
   1083 #endif
   1084 
   1085   // Create watchdog thread after creating all other threads because it will
   1086   // watch the other threads and they must be running.
   1087   browser_process_->watchdog_thread();
   1088 
   1089   // Do any initializating in the browser process that requires all threads
   1090   // running.
   1091   browser_process_->PreMainMessageLoopRun();
   1092 
   1093   // Record last shutdown time into a histogram.
   1094   browser_shutdown::ReadLastShutdownInfo();
   1095 
   1096 #if defined(OS_WIN)
   1097   // On Windows, we use our startup as an opportunity to do upgrade/uninstall
   1098   // tasks.  Those care whether the browser is already running.  On Linux/Mac,
   1099   // upgrade/uninstall happen separately.
   1100   bool already_running = browser_util::IsBrowserAlreadyRunning();
   1101 
   1102   // If the command line specifies 'uninstall' then we need to work here
   1103   // unless we detect another chrome browser running.
   1104   if (parsed_command_line().HasSwitch(switches::kUninstall)) {
   1105     return DoUninstallTasks(already_running);
   1106   }
   1107 
   1108   if (parsed_command_line().HasSwitch(switches::kHideIcons) ||
   1109       parsed_command_line().HasSwitch(switches::kShowIcons)) {
   1110     return ChromeBrowserMainPartsWin::HandleIconsCommands(
   1111         parsed_command_line_);
   1112   }
   1113 
   1114   ui::SelectFileDialog::SetFactory(new ChromeSelectFileDialogFactory(
   1115       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));
   1116 #endif
   1117 
   1118   if (parsed_command_line().HasSwitch(switches::kMakeDefaultBrowser)) {
   1119     return ShellIntegration::SetAsDefaultBrowser() ?
   1120         static_cast<int>(content::RESULT_CODE_NORMAL_EXIT) :
   1121         static_cast<int>(chrome::RESULT_CODE_SHELL_INTEGRATION_FAILED);
   1122   }
   1123 
   1124 #if defined(USE_AURA)
   1125   // Make sure aura::Env has been initialized.
   1126   CHECK(aura::Env::GetInstance());
   1127 #endif
   1128 
   1129   // Android doesn't support extensions and doesn't implement ProcessSingleton.
   1130 #if !defined(OS_ANDROID)
   1131   // If the command line specifies --pack-extension, attempt the pack extension
   1132   // startup action and exit.
   1133   if (parsed_command_line().HasSwitch(switches::kPackExtension)) {
   1134     extensions::StartupHelper extension_startup_helper;
   1135     if (extension_startup_helper.PackExtension(parsed_command_line()))
   1136       return content::RESULT_CODE_NORMAL_EXIT;
   1137     return chrome::RESULT_CODE_PACK_EXTENSION_ERROR;
   1138   }
   1139 
   1140   // If we're being launched just to check the connector policy, we are
   1141   // short-lived and don't want to be passing that switch off.
   1142   bool pass_command_line = !parsed_command_line().HasSwitch(
   1143       switches::kCheckCloudPrintConnectorPolicy);
   1144 
   1145   if (pass_command_line) {
   1146     // When another process is running, use that process instead of starting a
   1147     // new one. NotifyOtherProcess will currently give the other process up to
   1148     // 20 seconds to respond. Note that this needs to be done before we attempt
   1149     // to read the profile.
   1150     notify_result_ = process_singleton_->NotifyOtherProcessOrCreate();
   1151     switch (notify_result_) {
   1152       case ProcessSingleton::PROCESS_NONE:
   1153         // No process already running, fall through to starting a new one.
   1154         break;
   1155 
   1156       case ProcessSingleton::PROCESS_NOTIFIED:
   1157 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   1158         printf("%s\n", base::SysWideToNativeMB(base::UTF16ToWide(
   1159             l10n_util::GetStringUTF16(IDS_USED_EXISTING_BROWSER))).c_str());
   1160 #endif
   1161         // Having a differentiated return type for testing allows for tests to
   1162         // verify proper handling of some switches. When not testing, stick to
   1163         // the standard Unix convention of returning zero when things went as
   1164         // expected.
   1165         if (parsed_command_line().HasSwitch(switches::kTestType))
   1166           return chrome::RESULT_CODE_NORMAL_EXIT_PROCESS_NOTIFIED;
   1167         return content::RESULT_CODE_NORMAL_EXIT;
   1168 
   1169       case ProcessSingleton::PROFILE_IN_USE:
   1170         return chrome::RESULT_CODE_PROFILE_IN_USE;
   1171 
   1172       case ProcessSingleton::LOCK_ERROR:
   1173         LOG(ERROR) << "Failed to create a ProcessSingleton for your profile "
   1174                       "directory. This means that running multiple instances "
   1175                       "would start multiple browser processes rather than "
   1176                       "opening a new window in the existing process. Aborting "
   1177                       "now to avoid profile corruption.";
   1178         return chrome::RESULT_CODE_PROFILE_IN_USE;
   1179 
   1180       default:
   1181         NOTREACHED();
   1182     }
   1183   }
   1184 #endif  // !defined(OS_ANDROID)
   1185 
   1186   // Handle special early return paths (which couldn't be processed even earlier
   1187   // as they require the process singleton to be held) first.
   1188 
   1189   std::string try_chrome =
   1190       parsed_command_line().GetSwitchValueASCII(switches::kTryChromeAgain);
   1191   if (!try_chrome.empty()) {
   1192 #if defined(OS_WIN)
   1193     // Setup.exe has determined that we need to run a retention experiment
   1194     // and has lauched chrome to show the experiment UI. It is guaranteed that
   1195     // no other Chrome is currently running as the process singleton was
   1196     // sucessfully grabbed above.
   1197     int try_chrome_int;
   1198     base::StringToInt(try_chrome, &try_chrome_int);
   1199     TryChromeDialogView::Result answer = TryChromeDialogView::Show(
   1200         try_chrome_int,
   1201         base::Bind(&ChromeProcessSingleton::SetActiveModalDialog,
   1202                    base::Unretained(process_singleton_.get())));
   1203     if (answer == TryChromeDialogView::NOT_NOW)
   1204       return chrome::RESULT_CODE_NORMAL_EXIT_CANCEL;
   1205     if (answer == TryChromeDialogView::UNINSTALL_CHROME)
   1206       return chrome::RESULT_CODE_NORMAL_EXIT_EXP2;
   1207     // At this point the user is willing to try chrome again.
   1208     if (answer == TryChromeDialogView::TRY_CHROME_AS_DEFAULT) {
   1209       // Only set in the unattended case, the interactive case is Windows 8.
   1210       if (ShellIntegration::CanSetAsDefaultBrowser() ==
   1211           ShellIntegration::SET_DEFAULT_UNATTENDED)
   1212         ShellIntegration::SetAsDefaultBrowser();
   1213     }
   1214 #else
   1215     // We don't support retention experiments on Mac or Linux.
   1216     return content::RESULT_CODE_NORMAL_EXIT;
   1217 #endif  // defined(OS_WIN)
   1218   }
   1219 
   1220 #if defined(OS_WIN)
   1221   // Do the tasks if chrome has been upgraded while it was last running.
   1222   if (!already_running && upgrade_util::DoUpgradeTasks(parsed_command_line()))
   1223     return content::RESULT_CODE_NORMAL_EXIT;
   1224 
   1225   // Check if there is any machine level Chrome installed on the current
   1226   // machine. If yes and the current Chrome process is user level, we do not
   1227   // allow the user level Chrome to run. So we notify the user and uninstall
   1228   // user level Chrome.
   1229   // Note this check needs to happen here (after the process singleton was
   1230   // obtained but before potentially creating the first run sentinel).
   1231   if (ChromeBrowserMainPartsWin::CheckMachineLevelInstall())
   1232     return chrome::RESULT_CODE_MACHINE_LEVEL_INSTALL_EXISTS;
   1233 #endif  // defined(OS_WIN)
   1234 
   1235 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
   1236   if (sxs_linux::ShouldMigrateUserDataDir())
   1237     return sxs_linux::MigrateUserDataDir();
   1238 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
   1239 
   1240   // Desktop construction occurs here, (required before profile creation).
   1241   PreProfileInit();
   1242 
   1243   // Profile creation ----------------------------------------------------------
   1244 
   1245   metrics::MetricsService::SetExecutionPhase(
   1246       metrics::MetricsService::CREATE_PROFILE,
   1247       g_browser_process->local_state());
   1248   profile_ = CreatePrimaryProfile(parameters(),
   1249                                   user_data_dir_,
   1250                                   parsed_command_line());
   1251   if (!profile_)
   1252     return content::RESULT_CODE_NORMAL_EXIT;
   1253 
   1254 #if !defined(OS_ANDROID)
   1255   // The first run sentinel must be created after the process singleton was
   1256   // grabbed and no early return paths were otherwise hit above.
   1257   first_run::CreateSentinelIfNeeded();
   1258 #endif  // !defined(OS_ANDROID)
   1259 
   1260 #if defined(ENABLE_BACKGROUND)
   1261   // Autoload any profiles which are running background apps.
   1262   // TODO(rlp): Do this on a separate thread. See http://crbug.com/99075.
   1263   browser_process_->profile_manager()->AutoloadProfiles();
   1264 #endif
   1265   // Post-profile init ---------------------------------------------------------
   1266 
   1267   TranslateService::Initialize();
   1268 
   1269   // Needs to be done before PostProfileInit, since login manager on CrOS is
   1270   // called inside PostProfileInit.
   1271   content::WebUIControllerFactory::RegisterFactory(
   1272       ChromeWebUIControllerFactory::GetInstance());
   1273 
   1274   // NaClBrowserDelegateImpl is accessed inside PostProfileInit().
   1275   // So make sure to create it before that.
   1276 #if !defined(DISABLE_NACL)
   1277   NaClBrowserDelegateImpl* delegate =
   1278       new NaClBrowserDelegateImpl(browser_process_->profile_manager());
   1279   nacl::NaClBrowser::SetDelegate(delegate);
   1280 #endif
   1281 
   1282   // TODO(stevenjb): Move WIN and MACOSX specific code to appropriate Parts.
   1283   // (requires supporting early exit).
   1284   PostProfileInit();
   1285 
   1286   // Retrieve cached GL strings from local state and use them for GPU
   1287   // blacklist decisions.
   1288   if (g_browser_process->gl_string_manager())
   1289     g_browser_process->gl_string_manager()->Initialize();
   1290 
   1291   // Create an instance of GpuModeManager to watch gpu mode pref change.
   1292   g_browser_process->gpu_mode_manager();
   1293 
   1294 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
   1295   // Show the First Run UI if this is the first time Chrome has been run on
   1296   // this computer, or we're being compelled to do so by a command line flag.
   1297   // Note that this be done _after_ the PrefService is initialized and all
   1298   // preferences are registered, since some of the code that the importer
   1299   // touches reads preferences.
   1300   if (first_run::IsChromeFirstRun()) {
   1301     first_run::AutoImport(profile_,
   1302                           master_prefs_->homepage_defined,
   1303                           master_prefs_->do_import_items,
   1304                           master_prefs_->dont_import_items,
   1305                           master_prefs_->import_bookmarks_path);
   1306 
   1307     // Note: this can pop the first run consent dialog on linux.
   1308     first_run::DoPostImportTasks(profile_,
   1309                                  master_prefs_->make_chrome_default_for_user);
   1310 
   1311     if (!master_prefs_->suppress_first_run_default_browser_prompt) {
   1312       browser_creator_->set_show_main_browser_window(
   1313           !chrome::ShowFirstRunDefaultBrowserPrompt(profile_));
   1314     } else {
   1315       browser_creator_->set_is_default_browser_dialog_suppressed(true);
   1316     }
   1317   }
   1318 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
   1319 
   1320 #if defined(OS_WIN)
   1321   // Sets things up so that if we crash from this point on, a dialog will
   1322   // popup asking the user to restart chrome. It is done this late to avoid
   1323   // testing against a bunch of special cases that are taken care early on.
   1324   ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment(
   1325       parsed_command_line());
   1326 
   1327   // Registers Chrome with the Windows Restart Manager, which will restore the
   1328   // Chrome session when the computer is restarted after a system update.
   1329   // This could be run as late as WM_QUERYENDSESSION for system update reboots,
   1330   // but should run on startup if extended to handle crashes/hangs/patches.
   1331   // Also, better to run once here than once for each HWND's WM_QUERYENDSESSION.
   1332   if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
   1333     ChromeBrowserMainPartsWin::RegisterApplicationRestart(
   1334         parsed_command_line());
   1335   }
   1336 
   1337   // Verify that the profile is not on a network share and if so prepare to show
   1338   // notification to the user.
   1339   if (NetworkProfileBubble::ShouldCheckNetworkProfile(profile_)) {
   1340     BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
   1341         base::Bind(&NetworkProfileBubble::CheckNetworkProfile,
   1342                    profile_->GetPath()));
   1343   }
   1344 #endif  // OS_WIN
   1345 
   1346 #if defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
   1347   // Init the RLZ library. This just binds the dll and schedules a task on the
   1348   // file thread to be run sometime later. If this is the first run we record
   1349   // the installation event.
   1350   PrefService* pref_service = profile_->GetPrefs();
   1351   int ping_delay = first_run::IsChromeFirstRun() ? master_prefs_->ping_delay :
   1352       pref_service->GetInteger(first_run::GetPingDelayPrefName().c_str());
   1353   // Negative ping delay means to send ping immediately after a first search is
   1354   // recorded.
   1355   RLZTracker::InitRlzFromProfileDelayed(
   1356       profile_, first_run::IsChromeFirstRun(), ping_delay < 0,
   1357       base::TimeDelta::FromMilliseconds(abs(ping_delay)));
   1358 #endif  // defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
   1359 
   1360   // Configure modules that need access to resources.
   1361   net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);
   1362 
   1363   // In unittest mode, this will do nothing.  In normal mode, this will create
   1364   // the global IntranetRedirectDetector instance, which will promptly go to
   1365   // sleep for seven seconds (to avoid slowing startup), and wake up afterwards
   1366   // to see if it should do anything else.
   1367   //
   1368   // A simpler way of doing all this would be to have some function which could
   1369   // give the time elapsed since startup, and simply have this object check that
   1370   // when asked to initialize itself, but this doesn't seem to exist.
   1371   //
   1372   // This can't be created in the BrowserProcessImpl constructor because it
   1373   // needs to read prefs that get set after that runs.
   1374   browser_process_->intranet_redirect_detector();
   1375   GoogleSearchCounter::RegisterForNotifications();
   1376 
   1377   // Check SDCH field trial.  Default is now that everything is enabled,
   1378   // so provide options for disabling HTTPS or all of SDCH.
   1379   const char kSdchFieldTrialName[] = "SDCH";
   1380   const char kEnabledHttpOnlyGroupName[] = "EnabledHttpOnly";
   1381   const char kDisabledAllGroupName[] = "DisabledAll";
   1382 
   1383   // Store in a string on return to keep underlying storage for
   1384   // StringPiece stable.
   1385   std::string sdch_trial_group_string =
   1386       base::FieldTrialList::FindFullName(kSdchFieldTrialName);
   1387   base::StringPiece sdch_trial_group(sdch_trial_group_string);
   1388   if (sdch_trial_group.starts_with(kEnabledHttpOnlyGroupName)) {
   1389     net::SdchManager::EnableSdchSupport(true);
   1390     net::SdchManager::EnableSecureSchemeSupport(false);
   1391   } else if (sdch_trial_group.starts_with(kDisabledAllGroupName)) {
   1392     net::SdchManager::EnableSdchSupport(false);
   1393   }
   1394 
   1395 #if defined(ENABLE_FULL_PRINTING) && !defined(OFFICIAL_BUILD)
   1396   if (parsed_command_line().HasSwitch(switches::kDebugPrint)) {
   1397     base::FilePath path =
   1398         parsed_command_line().GetSwitchValuePath(switches::kDebugPrint);
   1399     printing::PrintedDocument::set_debug_dump_path(path);
   1400   }
   1401 #endif
   1402 
   1403   HandleTestParameters(parsed_command_line());
   1404   browser_process_->metrics_service()->RecordBreakpadHasDebugger(
   1405       base::debug::BeingDebugged());
   1406 
   1407   language_usage_metrics::LanguageUsageMetrics::RecordAcceptLanguages(
   1408       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages));
   1409   language_usage_metrics::LanguageUsageMetrics::RecordApplicationLanguage(
   1410       browser_process_->GetApplicationLocale());
   1411 
   1412   // Start watching for hangs during startup. We disarm this hang detector when
   1413   // ThreadWatcher takes over or when browser is shutdown or when
   1414   // startup_watcher_ is deleted.
   1415   metrics::MetricsService::SetExecutionPhase(
   1416       metrics::MetricsService::STARTUP_TIMEBOMB_ARM,
   1417       g_browser_process->local_state());
   1418   startup_watcher_->Arm(base::TimeDelta::FromSeconds(600));
   1419 
   1420   // On mobile, need for clean shutdown arises only when the application comes
   1421   // to foreground (i.e. MetricsService::OnAppEnterForeground is called).
   1422   // http://crbug.com/179143
   1423 #if !defined(OS_ANDROID)
   1424   // Start watching for a hang.
   1425   browser_process_->metrics_service()->LogNeedForCleanShutdown();
   1426 #endif
   1427 
   1428 #if defined(ENABLE_FULL_PRINTING)
   1429   // Create the instance of the cloud print proxy service so that it can launch
   1430   // the service process if needed. This is needed because the service process
   1431   // might have shutdown because an update was available.
   1432   // TODO(torne): this should maybe be done with
   1433   // BrowserContextKeyedServiceFactory::ServiceIsCreatedWithBrowserContext()
   1434   // instead?
   1435   CloudPrintProxyServiceFactory::GetForProfile(profile_);
   1436 #endif
   1437 
   1438   // Start watching all browser threads for responsiveness.
   1439   metrics::MetricsService::SetExecutionPhase(
   1440       metrics::MetricsService::THREAD_WATCHER_START,
   1441       g_browser_process->local_state());
   1442   ThreadWatcherList::StartWatchingAll(parsed_command_line());
   1443 
   1444 #if defined(OS_ANDROID)
   1445   ThreadWatcherAndroid::RegisterApplicationStatusListener();
   1446 #endif
   1447 
   1448 #if !defined(DISABLE_NACL)
   1449   BrowserThread::PostTask(
   1450       BrowserThread::IO,
   1451       FROM_HERE,
   1452       base::Bind(nacl::NaClProcessHost::EarlyStartup));
   1453 #endif
   1454 
   1455   // Make sure initial prefs are recorded
   1456   PrefMetricsService::Factory::GetForProfile(profile_);
   1457 
   1458   PreBrowserStart();
   1459 
   1460   // Instantiate the notification UI manager, as this triggers a perf timer
   1461   // used to measure startup time. TODO(stevenjb): Figure out what is actually
   1462   // triggering the timer and call that explicitly in the approprate place.
   1463   // http://crbug.com/105065.
   1464   browser_process_->notification_ui_manager();
   1465 
   1466   if (!parsed_command_line().HasSwitch(switches::kDisableComponentUpdate))
   1467     RegisterComponentsForUpdate();
   1468 
   1469 #if defined(OS_ANDROID)
   1470   chrome_variations::VariationsService* variations_service =
   1471       browser_process_->variations_service();
   1472   if (variations_service) {
   1473     variations_service->set_policy_pref_service(profile_->GetPrefs());
   1474     variations_service->StartRepeatedVariationsSeedFetch();
   1475   }
   1476   translate::TranslateDownloadManager::RequestLanguageList(
   1477       profile_->GetPrefs());
   1478 
   1479 #else
   1480   // Most general initialization is behind us, but opening a
   1481   // tab and/or session restore and such is still to be done.
   1482   base::TimeTicks browser_open_start = base::TimeTicks::Now();
   1483 
   1484   // We are in regular browser boot sequence. Open initial tabs and enter the
   1485   // main message loop.
   1486   int result_code;
   1487 #if defined(OS_CHROMEOS)
   1488   // On ChromeOS multiple profiles doesn't apply, and will break if we load
   1489   // them this early as the cryptohome hasn't yet been mounted (which happens
   1490   // only once we log in.
   1491   std::vector<Profile*> last_opened_profiles;
   1492 #else
   1493   std::vector<Profile*> last_opened_profiles =
   1494       g_browser_process->profile_manager()->GetLastOpenedProfiles();
   1495 #endif
   1496 
   1497   if (browser_creator_->Start(parsed_command_line(), base::FilePath(),
   1498                               profile_, last_opened_profiles, &result_code)) {
   1499 #if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
   1500     // Initialize autoupdate timer. Timer callback costs basically nothing
   1501     // when browser is not in persistent mode, so it's OK to let it ride on
   1502     // the main thread. This needs to be done here because we don't want
   1503     // to start the timer when Chrome is run inside a test harness.
   1504     browser_process_->StartAutoupdateTimer();
   1505 #endif
   1506 
   1507 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
   1508     // On Linux, the running exe will be updated if an upgrade becomes
   1509     // available while the browser is running.  We need to save the last
   1510     // modified time of the exe, so we can compare to determine if there is
   1511     // an upgrade while the browser is kept alive by a persistent extension.
   1512     upgrade_util::SaveLastModifiedTimeOfExe();
   1513 #endif
   1514 
   1515     // Record now as the last successful chrome start.
   1516     GoogleUpdateSettings::SetLastRunTime();
   1517 
   1518 #if defined(OS_MACOSX)
   1519     // Call Recycle() here as late as possible, before going into the loop
   1520     // because Start() will add things to it while creating the main window.
   1521     if (parameters().autorelease_pool)
   1522       parameters().autorelease_pool->Recycle();
   1523 #endif
   1524 
   1525     base::TimeDelta delay = base::TimeTicks::Now() - browser_open_start;
   1526     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserOpenTabs", delay);
   1527 
   1528     // If we're running tests (ui_task is non-null), then we don't want to
   1529     // call RequestLanguageList or StartRepeatedVariationsSeedFetch or
   1530     // RequestLanguageList
   1531     if (parameters().ui_task == NULL) {
   1532       // Request new variations seed information from server.
   1533       chrome_variations::VariationsService* variations_service =
   1534           browser_process_->variations_service();
   1535       if (variations_service) {
   1536         variations_service->StartRepeatedVariationsSeedFetch();
   1537 
   1538 #if defined(OS_WIN)
   1539         variations_service->StartGoogleUpdateRegistrySync();
   1540 #endif
   1541       }
   1542 
   1543       translate::TranslateDownloadManager::RequestLanguageList(
   1544           profile_->GetPrefs());
   1545     }
   1546 
   1547     run_message_loop_ = true;
   1548   } else {
   1549     run_message_loop_ = false;
   1550   }
   1551   browser_creator_.reset();
   1552 #endif  // !defined(OS_ANDROID)
   1553 
   1554 #if !defined(OS_ANDROID)
   1555   process_power_collector_.reset(new ProcessPowerCollector);
   1556   process_power_collector_->Initialize();
   1557 #endif
   1558 
   1559   PostBrowserStart();
   1560 
   1561   if (parameters().ui_task) {
   1562     parameters().ui_task->Run();
   1563     delete parameters().ui_task;
   1564     run_message_loop_ = false;
   1565   }
   1566 #if defined(OS_ANDROID)
   1567   // We never run the C++ main loop on Android, since the UI thread message
   1568   // loop is controlled by the OS, so this is as close as we can get to
   1569   // the start of the main loop
   1570   if (result_code_ <= 0) {
   1571     RecordBrowserStartupTime();
   1572   }
   1573 #endif
   1574   return result_code_;
   1575 }
   1576 
   1577 bool ChromeBrowserMainParts::MainMessageLoopRun(int* result_code) {
   1578   TRACE_EVENT0("startup", "ChromeBrowserMainParts::MainMessageLoopRun");
   1579 #if defined(OS_ANDROID)
   1580   // Chrome on Android does not use default MessageLoop. It has its own
   1581   // Android specific MessageLoop
   1582   NOTREACHED();
   1583   return true;
   1584 #else
   1585   // Set the result code set in PreMainMessageLoopRun or set above.
   1586   *result_code = result_code_;
   1587   if (!run_message_loop_)
   1588     return true;  // Don't run the default message loop.
   1589 
   1590   // These should be invoked as close to the start of the browser's
   1591   // UI thread message loop as possible to get a stable measurement
   1592   // across versions.
   1593   RecordBrowserStartupTime();
   1594 
   1595   DCHECK(base::MessageLoopForUI::IsCurrent());
   1596   base::RunLoop run_loop;
   1597 
   1598   performance_monitor::PerformanceMonitor::GetInstance()->StartGatherCycle();
   1599 
   1600   metrics::MetricsService::SetExecutionPhase(
   1601       metrics::MetricsService::MAIN_MESSAGE_LOOP_RUN,
   1602       g_browser_process->local_state());
   1603   run_loop.Run();
   1604 
   1605   return true;
   1606 #endif
   1607 }
   1608 
   1609 void ChromeBrowserMainParts::PostMainMessageLoopRun() {
   1610   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopRun");
   1611 #if defined(OS_ANDROID)
   1612   // Chrome on Android does not use default MessageLoop. It has its own
   1613   // Android specific MessageLoop
   1614   NOTREACHED();
   1615 #else
   1616 
   1617   // Start watching for jank during shutdown. It gets disarmed when
   1618   // |shutdown_watcher_| object is destructed.
   1619   metrics::MetricsService::SetExecutionPhase(
   1620       metrics::MetricsService::SHUTDOWN_TIMEBOMB_ARM,
   1621       g_browser_process->local_state());
   1622   shutdown_watcher_->Arm(base::TimeDelta::FromSeconds(300));
   1623 
   1624   // Disarm the startup hang detector time bomb if it is still Arm'ed.
   1625   startup_watcher_->Disarm();
   1626 
   1627   // Remove observers attached to D-Bus clients before DbusThreadManager is
   1628   // shut down.
   1629   process_power_collector_.reset();
   1630 
   1631   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
   1632     chrome_extra_parts_[i]->PostMainMessageLoopRun();
   1633 
   1634   // Some tests don't set parameters.ui_task, so they started translate
   1635   // language fetch that was never completed so we need to cleanup here
   1636   // otherwise it will be done by the destructor in a wrong thread.
   1637   TranslateService::Shutdown(parameters().ui_task == NULL);
   1638 
   1639   if (notify_result_ == ProcessSingleton::PROCESS_NONE)
   1640     process_singleton_->Cleanup();
   1641 
   1642   // Stop all tasks that might run on WatchDogThread.
   1643   ThreadWatcherList::StopWatchingAll();
   1644 
   1645   browser_process_->metrics_service()->Stop();
   1646 
   1647   restart_last_session_ = browser_shutdown::ShutdownPreThreadsStop();
   1648   browser_process_->StartTearDown();
   1649 #endif
   1650 }
   1651 
   1652 void ChromeBrowserMainParts::PostDestroyThreads() {
   1653 #if defined(OS_ANDROID)
   1654   // On Android, there is no quit/exit. So the browser's main message loop will
   1655   // not finish.
   1656   NOTREACHED();
   1657 #else
   1658   browser_process_->PostDestroyThreads();
   1659   // browser_shutdown takes care of deleting browser_process, so we need to
   1660   // release it.
   1661   ignore_result(browser_process_.release());
   1662   browser_shutdown::ShutdownPostThreadsStop(restart_last_session_);
   1663   master_prefs_.reset();
   1664   process_singleton_.reset();
   1665 
   1666   // We need to do this check as late as possible, but due to modularity, this
   1667   // may be the last point in Chrome.  This would be more effective if done at
   1668   // a higher level on the stack, so that it is impossible for an early return
   1669   // to bypass this code.  Perhaps we need a *final* hook that is called on all
   1670   // paths from content/browser/browser_main.
   1671   CHECK(metrics::MetricsService::UmaMetricsProperlyShutdown());
   1672 
   1673 #if defined(OS_CHROMEOS)
   1674   chromeos::CrosSettings::Shutdown();
   1675 #endif
   1676 #endif
   1677 }
   1678 
   1679 // Public members:
   1680 
   1681 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   1682   chrome_extra_parts_.push_back(parts);
   1683 }
   1684