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      1 // Copyright 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 "android_webview/native/aw_contents.h"
      6 
      7 #include <limits>
      8 
      9 #include "android_webview/browser/aw_browser_context.h"
     10 #include "android_webview/browser/aw_browser_main_parts.h"
     11 #include "android_webview/browser/aw_resource_context.h"
     12 #include "android_webview/browser/browser_view_renderer.h"
     13 #include "android_webview/browser/deferred_gpu_command_service.h"
     14 #include "android_webview/browser/gpu_memory_buffer_factory_impl.h"
     15 #include "android_webview/browser/hardware_renderer.h"
     16 #include "android_webview/browser/net_disk_cache_remover.h"
     17 #include "android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h"
     18 #include "android_webview/browser/scoped_app_gl_state_restore.h"
     19 #include "android_webview/common/aw_hit_test_data.h"
     20 #include "android_webview/common/devtools_instrumentation.h"
     21 #include "android_webview/native/aw_autofill_client.h"
     22 #include "android_webview/native/aw_browser_dependency_factory.h"
     23 #include "android_webview/native/aw_contents_client_bridge.h"
     24 #include "android_webview/native/aw_contents_io_thread_client_impl.h"
     25 #include "android_webview/native/aw_pdf_exporter.h"
     26 #include "android_webview/native/aw_picture.h"
     27 #include "android_webview/native/aw_web_contents_delegate.h"
     28 #include "android_webview/native/java_browser_view_renderer_helper.h"
     29 #include "android_webview/native/permission/aw_permission_request.h"
     30 #include "android_webview/native/permission/permission_request_handler.h"
     31 #include "android_webview/native/permission/simple_permission_request.h"
     32 #include "android_webview/native/state_serializer.h"
     33 #include "android_webview/public/browser/draw_gl.h"
     34 #include "base/android/jni_android.h"
     35 #include "base/android/jni_array.h"
     36 #include "base/android/jni_string.h"
     37 #include "base/android/scoped_java_ref.h"
     38 #include "base/atomicops.h"
     39 #include "base/bind.h"
     40 #include "base/callback.h"
     41 #include "base/memory/memory_pressure_listener.h"
     42 #include "base/message_loop/message_loop.h"
     43 #include "base/pickle.h"
     44 #include "base/strings/string16.h"
     45 #include "base/supports_user_data.h"
     46 #include "components/autofill/content/browser/content_autofill_driver.h"
     47 #include "components/autofill/core/browser/autofill_manager.h"
     48 #include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
     49 #include "components/data_reduction_proxy/browser/data_reduction_proxy_settings.h"
     50 #include "components/navigation_interception/intercept_navigation_delegate.h"
     51 #include "content/public/browser/android/content_view_core.h"
     52 #include "content/public/browser/browser_thread.h"
     53 #include "content/public/browser/cert_store.h"
     54 #include "content/public/browser/favicon_status.h"
     55 #include "content/public/browser/navigation_entry.h"
     56 #include "content/public/browser/render_frame_host.h"
     57 #include "content/public/browser/render_process_host.h"
     58 #include "content/public/browser/render_view_host.h"
     59 #include "content/public/browser/web_contents.h"
     60 #include "content/public/common/renderer_preferences.h"
     61 #include "content/public/common/ssl_status.h"
     62 #include "jni/AwContents_jni.h"
     63 #include "net/base/auth.h"
     64 #include "net/cert/x509_certificate.h"
     65 #include "third_party/skia/include/core/SkPicture.h"
     66 #include "ui/base/l10n/l10n_util_android.h"
     67 #include "ui/gfx/android/java_bitmap.h"
     68 #include "ui/gfx/image/image.h"
     69 #include "ui/gfx/size.h"
     70 
     71 struct AwDrawSWFunctionTable;
     72 struct AwDrawGLFunctionTable;
     73 
     74 using autofill::ContentAutofillDriver;
     75 using autofill::AutofillManager;
     76 using base::android::AttachCurrentThread;
     77 using base::android::ConvertJavaStringToUTF16;
     78 using base::android::ConvertJavaStringToUTF8;
     79 using base::android::ConvertUTF16ToJavaString;
     80 using base::android::ConvertUTF8ToJavaString;
     81 using base::android::JavaRef;
     82 using base::android::ScopedJavaGlobalRef;
     83 using base::android::ScopedJavaLocalRef;
     84 using data_reduction_proxy::DataReductionProxySettings;
     85 using navigation_interception::InterceptNavigationDelegate;
     86 using content::BrowserThread;
     87 using content::ContentViewCore;
     88 using content::WebContents;
     89 
     90 extern "C" {
     91 static AwDrawGLFunction DrawGLFunction;
     92 static void DrawGLFunction(long view_context,
     93                            AwDrawGLInfo* draw_info,
     94                            void* spare) {
     95   // |view_context| is the value that was returned from the java
     96   // AwContents.onPrepareDrawGL; this cast must match the code there.
     97   reinterpret_cast<android_webview::AwContents*>(view_context)
     98       ->DrawGL(draw_info);
     99 }
    100 }
    101 
    102 namespace android_webview {
    103 
    104 namespace {
    105 
    106 bool g_should_download_favicons = false;
    107 
    108 const void* kAwContentsUserDataKey = &kAwContentsUserDataKey;
    109 
    110 class AwContentsUserData : public base::SupportsUserData::Data {
    111  public:
    112   AwContentsUserData(AwContents* ptr) : contents_(ptr) {}
    113 
    114   static AwContents* GetContents(WebContents* web_contents) {
    115     if (!web_contents)
    116       return NULL;
    117     AwContentsUserData* data = reinterpret_cast<AwContentsUserData*>(
    118         web_contents->GetUserData(kAwContentsUserDataKey));
    119     return data ? data->contents_ : NULL;
    120   }
    121 
    122  private:
    123   AwContents* contents_;
    124 };
    125 
    126 base::subtle::Atomic32 g_instance_count = 0;
    127 
    128 void OnIoThreadClientReady(content::RenderFrameHost* rfh) {
    129   int render_process_id = rfh->GetProcess()->GetID();
    130   int render_frame_id = rfh->GetRoutingID();
    131   AwResourceDispatcherHostDelegate::OnIoThreadClientReady(
    132       render_process_id, render_frame_id);
    133 }
    134 
    135 }  // namespace
    136 
    137 // static
    138 AwContents* AwContents::FromWebContents(WebContents* web_contents) {
    139   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    140   return AwContentsUserData::GetContents(web_contents);
    141 }
    142 
    143 // static
    144 AwContents* AwContents::FromID(int render_process_id, int render_view_id) {
    145   const content::RenderViewHost* rvh =
    146       content::RenderViewHost::FromID(render_process_id, render_view_id);
    147   if (!rvh) return NULL;
    148   content::WebContents* web_contents =
    149       content::WebContents::FromRenderViewHost(rvh);
    150   if (!web_contents) return NULL;
    151   return FromWebContents(web_contents);
    152 }
    153 
    154 // static
    155 AwBrowserPermissionRequestDelegate* AwBrowserPermissionRequestDelegate::FromID(
    156     int render_process_id, int render_view_id) {
    157   AwContents* aw_contents = AwContents::FromID(render_process_id,
    158                                                render_view_id);
    159   return implicit_cast<AwBrowserPermissionRequestDelegate*>(aw_contents);
    160 }
    161 
    162 AwContents::AwContents(scoped_ptr<WebContents> web_contents)
    163     : web_contents_(web_contents.Pass()),
    164       shared_renderer_state_(
    165           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
    166           this),
    167       browser_view_renderer_(
    168           this,
    169           &shared_renderer_state_,
    170           web_contents_.get(),
    171           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI)),
    172       renderer_manager_key_(GLViewRendererManager::GetInstance()->NullKey()) {
    173   base::subtle::NoBarrier_AtomicIncrement(&g_instance_count, 1);
    174   icon_helper_.reset(new IconHelper(web_contents_.get()));
    175   icon_helper_->SetListener(this);
    176   web_contents_->SetUserData(kAwContentsUserDataKey,
    177                              new AwContentsUserData(this));
    178   render_view_host_ext_.reset(
    179       new AwRenderViewHostExt(this, web_contents_.get()));
    180 
    181   permission_request_handler_.reset(
    182       new PermissionRequestHandler(this, web_contents_.get()));
    183 
    184   AwAutofillClient* autofill_manager_delegate =
    185       AwAutofillClient::FromWebContents(web_contents_.get());
    186   InitDataReductionProxyIfNecessary();
    187   if (autofill_manager_delegate)
    188     InitAutofillIfNecessary(autofill_manager_delegate->GetSaveFormData());
    189 }
    190 
    191 void AwContents::SetJavaPeers(JNIEnv* env,
    192                               jobject obj,
    193                               jobject aw_contents,
    194                               jobject web_contents_delegate,
    195                               jobject contents_client_bridge,
    196                               jobject io_thread_client,
    197                               jobject intercept_navigation_delegate) {
    198   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    199   // The |aw_content| param is technically spurious as it duplicates |obj| but
    200   // is passed over anyway to make the binding more explicit.
    201   java_ref_ = JavaObjectWeakGlobalRef(env, aw_contents);
    202 
    203   web_contents_delegate_.reset(
    204       new AwWebContentsDelegate(env, web_contents_delegate));
    205   web_contents_->SetDelegate(web_contents_delegate_.get());
    206 
    207   contents_client_bridge_.reset(
    208       new AwContentsClientBridge(env, contents_client_bridge));
    209   AwContentsClientBridgeBase::Associate(web_contents_.get(),
    210                                         contents_client_bridge_.get());
    211 
    212   AwContentsIoThreadClientImpl::Associate(
    213       web_contents_.get(), ScopedJavaLocalRef<jobject>(env, io_thread_client));
    214 
    215   InterceptNavigationDelegate::Associate(
    216       web_contents_.get(),
    217       make_scoped_ptr(new InterceptNavigationDelegate(
    218           env, intercept_navigation_delegate)));
    219 
    220   // Finally, having setup the associations, release any deferred requests
    221   web_contents_->ForEachFrame(base::Bind(&OnIoThreadClientReady));
    222 }
    223 
    224 void AwContents::SetSaveFormData(bool enabled) {
    225   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    226   InitAutofillIfNecessary(enabled);
    227   // We need to check for the existence, since autofill_manager_delegate
    228   // may not be created when the setting is false.
    229   if (ContentAutofillDriver::FromWebContents(web_contents_.get())) {
    230     AwAutofillClient::FromWebContents(web_contents_.get())->
    231         SetSaveFormData(enabled);
    232   }
    233 }
    234 
    235 void AwContents::InitDataReductionProxyIfNecessary() {
    236   AwBrowserContext* browser_context =
    237       AwBrowserContext::FromWebContents(web_contents_.get());
    238   browser_context->CreateUserPrefServiceIfNecessary();
    239 }
    240 
    241 void AwContents::InitAutofillIfNecessary(bool enabled) {
    242   // Do not initialize if the feature is not enabled.
    243   if (!enabled)
    244     return;
    245   // Check if the autofill driver already exists.
    246   content::WebContents* web_contents = web_contents_.get();
    247   if (ContentAutofillDriver::FromWebContents(web_contents))
    248     return;
    249 
    250   AwBrowserContext::FromWebContents(web_contents)->
    251       CreateUserPrefServiceIfNecessary();
    252   AwAutofillClient::CreateForWebContents(web_contents);
    253   ContentAutofillDriver::CreateForWebContentsAndDelegate(
    254       web_contents,
    255       AwAutofillClient::FromWebContents(web_contents),
    256       l10n_util::GetDefaultLocale(),
    257       AutofillManager::DISABLE_AUTOFILL_DOWNLOAD_MANAGER);
    258 }
    259 
    260 void AwContents::SetAwAutofillClient(jobject client) {
    261   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    262   JNIEnv* env = AttachCurrentThread();
    263   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    264   if (obj.is_null())
    265     return;
    266   Java_AwContents_setAwAutofillClient(env, obj.obj(), client);
    267 }
    268 
    269 AwContents::~AwContents() {
    270   DCHECK(AwContents::FromWebContents(web_contents_.get()) == this);
    271   DCHECK(!hardware_renderer_.get());
    272   web_contents_->RemoveUserData(kAwContentsUserDataKey);
    273   if (find_helper_.get())
    274     find_helper_->SetListener(NULL);
    275   if (icon_helper_.get())
    276     icon_helper_->SetListener(NULL);
    277   base::subtle::NoBarrier_AtomicIncrement(&g_instance_count, -1);
    278   // When the last WebView is destroyed free all discardable memory allocated by
    279   // Chromium, because the app process may continue to run for a long time
    280   // without ever using another WebView.
    281   if (base::subtle::NoBarrier_Load(&g_instance_count) == 0) {
    282     base::MemoryPressureListener::NotifyMemoryPressure(
    283         base::MemoryPressureListener::MEMORY_PRESSURE_CRITICAL);
    284   }
    285 }
    286 
    287 jlong AwContents::GetWebContents(JNIEnv* env, jobject obj) {
    288   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    289   DCHECK(web_contents_);
    290   return reinterpret_cast<intptr_t>(web_contents_.get());
    291 }
    292 
    293 void AwContents::Destroy(JNIEnv* env, jobject obj) {
    294   java_ref_.reset();
    295 
    296   // We clear the contents_client_bridge_ here so that we break the link with
    297   // the java peer. This is important for the popup window case, where we are
    298   // swapping AwContents out that share the same java AwContentsClientBridge.
    299   // See b/15074651.
    300   AwContentsClientBridgeBase::Disassociate(web_contents_.get());
    301   contents_client_bridge_.reset();
    302 
    303   // We do not delete AwContents immediately. Some applications try to delete
    304   // Webview in ShouldOverrideUrlLoading callback, which is a sync IPC from
    305   // Webkit.
    306   BrowserThread::DeleteSoon(BrowserThread::UI, FROM_HERE, this);
    307 }
    308 
    309 static jlong Init(JNIEnv* env, jclass, jobject browser_context) {
    310   // TODO(joth): Use |browser_context| to get the native BrowserContext, rather
    311   // than hard-code the default instance lookup here.
    312   scoped_ptr<WebContents> web_contents(content::WebContents::Create(
    313       content::WebContents::CreateParams(AwBrowserContext::GetDefault())));
    314   // Return an 'uninitialized' instance; most work is deferred until the
    315   // subsequent SetJavaPeers() call.
    316   return reinterpret_cast<intptr_t>(new AwContents(web_contents.Pass()));
    317 }
    318 
    319 static void SetAwDrawSWFunctionTable(JNIEnv* env, jclass,
    320                                      jlong function_table) {
    321   JavaBrowserViewRendererHelper::SetAwDrawSWFunctionTable(
    322       reinterpret_cast<AwDrawSWFunctionTable*>(function_table));
    323 }
    324 
    325 static void SetAwDrawGLFunctionTable(JNIEnv* env, jclass,
    326                                      jlong function_table) {
    327   GpuMemoryBufferFactoryImpl::SetAwDrawGLFunctionTable(
    328       reinterpret_cast<AwDrawGLFunctionTable*>(function_table));
    329 }
    330 
    331 static jlong GetAwDrawGLFunction(JNIEnv* env, jclass) {
    332   return reinterpret_cast<intptr_t>(&DrawGLFunction);
    333 }
    334 
    335 // static
    336 jint GetNativeInstanceCount(JNIEnv* env, jclass) {
    337   return base::subtle::NoBarrier_Load(&g_instance_count);
    338 }
    339 
    340 jlong AwContents::GetAwDrawGLViewContext(JNIEnv* env, jobject obj) {
    341   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    342   return reinterpret_cast<intptr_t>(this);
    343 }
    344 
    345 void AwContents::DrawGL(AwDrawGLInfo* draw_info) {
    346   if (draw_info->mode == AwDrawGLInfo::kModeSync) {
    347     if (hardware_renderer_)
    348       hardware_renderer_->CommitFrame();
    349     return;
    350   }
    351 
    352   {
    353     GLViewRendererManager* manager = GLViewRendererManager::GetInstance();
    354     base::AutoLock lock(render_thread_lock_);
    355     if (renderer_manager_key_ != manager->NullKey()) {
    356       manager->DidDrawGL(renderer_manager_key_);
    357     }
    358   }
    359 
    360   ScopedAppGLStateRestore state_restore(
    361       draw_info->mode == AwDrawGLInfo::kModeDraw
    362           ? ScopedAppGLStateRestore::MODE_DRAW
    363           : ScopedAppGLStateRestore::MODE_RESOURCE_MANAGEMENT);
    364   ScopedAllowGL allow_gl;
    365 
    366   if (draw_info->mode == AwDrawGLInfo::kModeProcessNoContext) {
    367     LOG(ERROR) << "Received unexpected kModeProcessNoContext";
    368   }
    369 
    370   // kModeProcessNoContext should never happen because we tear down hardware
    371   // in onTrimMemory. However that guarantee is maintained outside of chromium
    372   // code. Not notifying shared state in kModeProcessNoContext can lead to
    373   // immediate deadlock, which is slightly more catastrophic than leaks or
    374   // corruption.
    375   if (draw_info->mode == AwDrawGLInfo::kModeProcess ||
    376       draw_info->mode == AwDrawGLInfo::kModeProcessNoContext) {
    377     shared_renderer_state_.DidDrawGLProcess();
    378   }
    379 
    380   if (shared_renderer_state_.IsInsideHardwareRelease()) {
    381     hardware_renderer_.reset();
    382     // Flush the idle queue in tear down.
    383     DeferredGpuCommandService::GetInstance()->PerformAllIdleWork();
    384     return;
    385   }
    386 
    387   if (draw_info->mode != AwDrawGLInfo::kModeDraw) {
    388     if (draw_info->mode == AwDrawGLInfo::kModeProcess) {
    389       DeferredGpuCommandService::GetInstance()->PerformIdleWork(true);
    390     }
    391     return;
    392   }
    393 
    394   if (!hardware_renderer_) {
    395     hardware_renderer_.reset(new HardwareRenderer(&shared_renderer_state_));
    396     hardware_renderer_->CommitFrame();
    397   }
    398 
    399   hardware_renderer_->DrawGL(state_restore.stencil_enabled(),
    400                              state_restore.framebuffer_binding_ext(),
    401                              draw_info);
    402   DeferredGpuCommandService::GetInstance()->PerformIdleWork(false);
    403 }
    404 
    405 namespace {
    406 void DocumentHasImagesCallback(const ScopedJavaGlobalRef<jobject>& message,
    407                                bool has_images) {
    408   Java_AwContents_onDocumentHasImagesResponse(AttachCurrentThread(),
    409                                               has_images,
    410                                               message.obj());
    411 }
    412 }  // namespace
    413 
    414 void AwContents::DocumentHasImages(JNIEnv* env, jobject obj, jobject message) {
    415   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    416   ScopedJavaGlobalRef<jobject> j_message;
    417   j_message.Reset(env, message);
    418   render_view_host_ext_->DocumentHasImages(
    419       base::Bind(&DocumentHasImagesCallback, j_message));
    420 }
    421 
    422 namespace {
    423 void GenerateMHTMLCallback(ScopedJavaGlobalRef<jobject>* callback,
    424                            const base::FilePath& path, int64 size) {
    425   JNIEnv* env = AttachCurrentThread();
    426   // Android files are UTF8, so the path conversion below is safe.
    427   Java_AwContents_generateMHTMLCallback(
    428       env,
    429       ConvertUTF8ToJavaString(env, path.AsUTF8Unsafe()).obj(),
    430       size, callback->obj());
    431 }
    432 }  // namespace
    433 
    434 void AwContents::GenerateMHTML(JNIEnv* env, jobject obj,
    435                                jstring jpath, jobject callback) {
    436   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    437   ScopedJavaGlobalRef<jobject>* j_callback = new ScopedJavaGlobalRef<jobject>();
    438   j_callback->Reset(env, callback);
    439   base::FilePath target_path(ConvertJavaStringToUTF8(env, jpath));
    440   web_contents_->GenerateMHTML(
    441       target_path,
    442       base::Bind(&GenerateMHTMLCallback, base::Owned(j_callback), target_path));
    443 }
    444 
    445 void AwContents::CreatePdfExporter(JNIEnv* env,
    446                                    jobject obj,
    447                                    jobject pdfExporter) {
    448   pdf_exporter_.reset(
    449       new AwPdfExporter(env,
    450                         pdfExporter,
    451                         web_contents_.get()));
    452 }
    453 
    454 bool AwContents::OnReceivedHttpAuthRequest(const JavaRef<jobject>& handler,
    455                                            const std::string& host,
    456                                            const std::string& realm) {
    457   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    458   JNIEnv* env = AttachCurrentThread();
    459   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    460   if (obj.is_null())
    461     return false;
    462 
    463   ScopedJavaLocalRef<jstring> jhost = ConvertUTF8ToJavaString(env, host);
    464   ScopedJavaLocalRef<jstring> jrealm = ConvertUTF8ToJavaString(env, realm);
    465   devtools_instrumentation::ScopedEmbedderCallbackTask embedder_callback(
    466       "onReceivedHttpAuthRequest");
    467   Java_AwContents_onReceivedHttpAuthRequest(env, obj.obj(), handler.obj(),
    468       jhost.obj(), jrealm.obj());
    469   return true;
    470 }
    471 
    472 void AwContents::AddVisitedLinks(JNIEnv* env,
    473                                    jobject obj,
    474                                    jobjectArray jvisited_links) {
    475   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    476   std::vector<base::string16> visited_link_strings;
    477   base::android::AppendJavaStringArrayToStringVector(
    478       env, jvisited_links, &visited_link_strings);
    479 
    480   std::vector<GURL> visited_link_gurls;
    481   std::vector<base::string16>::const_iterator itr;
    482   for (itr = visited_link_strings.begin(); itr != visited_link_strings.end();
    483        ++itr) {
    484     visited_link_gurls.push_back(GURL(*itr));
    485   }
    486 
    487   AwBrowserContext::FromWebContents(web_contents_.get())
    488       ->AddVisitedURLs(visited_link_gurls);
    489 }
    490 
    491 bool RegisterAwContents(JNIEnv* env) {
    492   return RegisterNativesImpl(env);
    493 }
    494 
    495 namespace {
    496 
    497 void ShowGeolocationPromptHelperTask(const JavaObjectWeakGlobalRef& java_ref,
    498                                      const GURL& origin) {
    499   JNIEnv* env = AttachCurrentThread();
    500   ScopedJavaLocalRef<jobject> j_ref = java_ref.get(env);
    501   if (j_ref.obj()) {
    502     ScopedJavaLocalRef<jstring> j_origin(
    503         ConvertUTF8ToJavaString(env, origin.spec()));
    504     devtools_instrumentation::ScopedEmbedderCallbackTask embedder_callback(
    505         "onGeolocationPermissionsShowPrompt");
    506     Java_AwContents_onGeolocationPermissionsShowPrompt(env,
    507                                                        j_ref.obj(),
    508                                                        j_origin.obj());
    509   }
    510 }
    511 
    512 void ShowGeolocationPromptHelper(const JavaObjectWeakGlobalRef& java_ref,
    513                                  const GURL& origin) {
    514   JNIEnv* env = AttachCurrentThread();
    515   if (java_ref.get(env).obj()) {
    516     content::BrowserThread::PostTask(
    517         content::BrowserThread::UI,
    518         FROM_HERE,
    519         base::Bind(&ShowGeolocationPromptHelperTask,
    520                    java_ref,
    521                    origin));
    522   }
    523 }
    524 
    525 } // anonymous namespace
    526 
    527 void AwContents::ShowGeolocationPrompt(const GURL& requesting_frame,
    528                                        base::Callback<void(bool)> callback) {
    529   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    530 
    531   GURL origin = requesting_frame.GetOrigin();
    532   bool show_prompt = pending_geolocation_prompts_.empty();
    533   pending_geolocation_prompts_.push_back(OriginCallback(origin, callback));
    534   if (show_prompt) {
    535     ShowGeolocationPromptHelper(java_ref_, origin);
    536   }
    537 }
    538 
    539 // Invoked from Java
    540 void AwContents::InvokeGeolocationCallback(JNIEnv* env,
    541                                            jobject obj,
    542                                            jboolean value,
    543                                            jstring origin) {
    544   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    545 
    546   GURL callback_origin(base::android::ConvertJavaStringToUTF16(env, origin));
    547   if (callback_origin.GetOrigin() ==
    548       pending_geolocation_prompts_.front().first) {
    549     pending_geolocation_prompts_.front().second.Run(value);
    550     pending_geolocation_prompts_.pop_front();
    551     if (!pending_geolocation_prompts_.empty()) {
    552       ShowGeolocationPromptHelper(java_ref_,
    553                                   pending_geolocation_prompts_.front().first);
    554     }
    555   }
    556 }
    557 
    558 void AwContents::HideGeolocationPrompt(const GURL& origin) {
    559   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    560   bool removed_current_outstanding_callback = false;
    561   std::list<OriginCallback>::iterator it = pending_geolocation_prompts_.begin();
    562   while (it != pending_geolocation_prompts_.end()) {
    563     if ((*it).first == origin.GetOrigin()) {
    564       if (it == pending_geolocation_prompts_.begin()) {
    565         removed_current_outstanding_callback = true;
    566       }
    567       it = pending_geolocation_prompts_.erase(it);
    568     } else {
    569       ++it;
    570     }
    571   }
    572 
    573   if (removed_current_outstanding_callback) {
    574     JNIEnv* env = AttachCurrentThread();
    575     ScopedJavaLocalRef<jobject> j_ref = java_ref_.get(env);
    576     if (j_ref.obj()) {
    577       devtools_instrumentation::ScopedEmbedderCallbackTask embedder_callback(
    578           "onGeolocationPermissionsHidePrompt");
    579       Java_AwContents_onGeolocationPermissionsHidePrompt(env, j_ref.obj());
    580     }
    581     if (!pending_geolocation_prompts_.empty()) {
    582       ShowGeolocationPromptHelper(java_ref_,
    583                             pending_geolocation_prompts_.front().first);
    584     }
    585   }
    586 }
    587 
    588 void AwContents::OnPermissionRequest(AwPermissionRequest* request) {
    589   JNIEnv* env = AttachCurrentThread();
    590   ScopedJavaLocalRef<jobject> j_request = request->CreateJavaPeer();
    591   ScopedJavaLocalRef<jobject> j_ref = java_ref_.get(env);
    592   if (j_request.is_null() || j_ref.is_null()) {
    593     permission_request_handler_->CancelRequest(
    594         request->GetOrigin(), request->GetResources());
    595     return;
    596   }
    597 
    598   Java_AwContents_onPermissionRequest(env, j_ref.obj(), j_request.obj());
    599 }
    600 
    601 void AwContents::OnPermissionRequestCanceled(AwPermissionRequest* request) {
    602   JNIEnv* env = AttachCurrentThread();
    603   ScopedJavaLocalRef<jobject> j_request = request->GetJavaObject();
    604   ScopedJavaLocalRef<jobject> j_ref = java_ref_.get(env);
    605   if (j_request.is_null() || j_ref.is_null())
    606     return;
    607 
    608   Java_AwContents_onPermissionRequestCanceled(
    609       env, j_ref.obj(), j_request.obj());
    610 }
    611 
    612 void AwContents::PreauthorizePermission(
    613     JNIEnv* env,
    614     jobject obj,
    615     jstring origin,
    616     jlong resources) {
    617   permission_request_handler_->PreauthorizePermission(
    618       GURL(base::android::ConvertJavaStringToUTF8(env, origin)), resources);
    619 }
    620 
    621 void AwContents::RequestProtectedMediaIdentifierPermission(
    622     const GURL& origin,
    623     const base::Callback<void(bool)>& callback) {
    624   permission_request_handler_->SendRequest(
    625       scoped_ptr<AwPermissionRequestDelegate>(new SimplePermissionRequest(
    626           origin, AwPermissionRequest::ProtectedMediaId, callback)));
    627 }
    628 
    629 void AwContents::CancelProtectedMediaIdentifierPermissionRequests(
    630     const GURL& origin) {
    631   permission_request_handler_->CancelRequest(
    632       origin, AwPermissionRequest::ProtectedMediaId);
    633 }
    634 
    635 void AwContents::RequestGeolocationPermission(
    636     const GURL& origin,
    637     const base::Callback<void(bool)>& callback) {
    638   JNIEnv* env = AttachCurrentThread();
    639   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    640   if (obj.is_null())
    641     return;
    642 
    643   if (Java_AwContents_useLegacyGeolocationPermissionAPI(env, obj.obj())) {
    644     ShowGeolocationPrompt(origin, callback);
    645     return;
    646   }
    647   permission_request_handler_->SendRequest(
    648       scoped_ptr<AwPermissionRequestDelegate>(new SimplePermissionRequest(
    649           origin, AwPermissionRequest::Geolocation, callback)));
    650 }
    651 
    652 void AwContents::CancelGeolocationPermissionRequests(const GURL& origin) {
    653   JNIEnv* env = AttachCurrentThread();
    654   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    655   if (obj.is_null())
    656     return;
    657 
    658   if (Java_AwContents_useLegacyGeolocationPermissionAPI(env, obj.obj())) {
    659     HideGeolocationPrompt(origin);
    660     return;
    661   }
    662   permission_request_handler_->CancelRequest(
    663       origin, AwPermissionRequest::Geolocation);
    664 }
    665 
    666 void AwContents::FindAllAsync(JNIEnv* env, jobject obj, jstring search_string) {
    667   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    668   GetFindHelper()->FindAllAsync(ConvertJavaStringToUTF16(env, search_string));
    669 }
    670 
    671 void AwContents::FindNext(JNIEnv* env, jobject obj, jboolean forward) {
    672   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    673   GetFindHelper()->FindNext(forward);
    674 }
    675 
    676 void AwContents::ClearMatches(JNIEnv* env, jobject obj) {
    677   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    678   GetFindHelper()->ClearMatches();
    679 }
    680 
    681 void AwContents::ClearCache(
    682     JNIEnv* env,
    683     jobject obj,
    684     jboolean include_disk_files) {
    685   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    686   render_view_host_ext_->ClearCache();
    687 
    688   if (include_disk_files) {
    689     RemoveHttpDiskCache(web_contents_->GetBrowserContext(),
    690                         web_contents_->GetRoutingID());
    691   }
    692 }
    693 
    694 FindHelper* AwContents::GetFindHelper() {
    695   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    696   if (!find_helper_.get()) {
    697     find_helper_.reset(new FindHelper(web_contents_.get()));
    698     find_helper_->SetListener(this);
    699   }
    700   return find_helper_.get();
    701 }
    702 
    703 void AwContents::OnFindResultReceived(int active_ordinal,
    704                                       int match_count,
    705                                       bool finished) {
    706   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    707   JNIEnv* env = AttachCurrentThread();
    708   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    709   if (obj.is_null())
    710     return;
    711 
    712   Java_AwContents_onFindResultReceived(
    713       env, obj.obj(), active_ordinal, match_count, finished);
    714 }
    715 
    716 bool AwContents::ShouldDownloadFavicon(const GURL& icon_url) {
    717   return g_should_download_favicons;
    718 }
    719 
    720 void AwContents::OnReceivedIcon(const GURL& icon_url, const SkBitmap& bitmap) {
    721   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    722   JNIEnv* env = AttachCurrentThread();
    723   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    724   if (obj.is_null())
    725     return;
    726 
    727   content::NavigationEntry* entry =
    728       web_contents_->GetController().GetActiveEntry();
    729 
    730   if (entry) {
    731     entry->GetFavicon().valid = true;
    732     entry->GetFavicon().url = icon_url;
    733     entry->GetFavicon().image = gfx::Image::CreateFrom1xBitmap(bitmap);
    734   }
    735 
    736   Java_AwContents_onReceivedIcon(
    737       env, obj.obj(), gfx::ConvertToJavaBitmap(&bitmap).obj());
    738 }
    739 
    740 void AwContents::OnReceivedTouchIconUrl(const std::string& url,
    741                                         bool precomposed) {
    742   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    743   JNIEnv* env = AttachCurrentThread();
    744   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    745   if (obj.is_null())
    746     return;
    747 
    748   Java_AwContents_onReceivedTouchIconUrl(
    749       env, obj.obj(), ConvertUTF8ToJavaString(env, url).obj(), precomposed);
    750 }
    751 
    752 bool AwContents::RequestDrawGL(jobject canvas, bool wait_for_completion) {
    753   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    754   DCHECK(!canvas || !wait_for_completion);
    755   JNIEnv* env = AttachCurrentThread();
    756   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    757   if (obj.is_null())
    758     return false;
    759   return Java_AwContents_requestDrawGL(
    760       env, obj.obj(), canvas, wait_for_completion);
    761 }
    762 
    763 void AwContents::PostInvalidate() {
    764   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    765   JNIEnv* env = AttachCurrentThread();
    766   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    767   if (!obj.is_null())
    768     Java_AwContents_postInvalidateOnAnimation(env, obj.obj());
    769 }
    770 
    771 void AwContents::UpdateParentDrawConstraints() {
    772   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    773   browser_view_renderer_.UpdateParentDrawConstraints();
    774 }
    775 
    776 void AwContents::OnNewPicture() {
    777   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    778   JNIEnv* env = AttachCurrentThread();
    779   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    780   if (!obj.is_null()) {
    781     devtools_instrumentation::ScopedEmbedderCallbackTask embedder_callback(
    782         "onNewPicture");
    783     Java_AwContents_onNewPicture(env, obj.obj());
    784   }
    785 }
    786 
    787 base::android::ScopedJavaLocalRef<jbyteArray>
    788     AwContents::GetCertificate(JNIEnv* env,
    789                                jobject obj) {
    790   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    791   content::NavigationEntry* entry =
    792       web_contents_->GetController().GetActiveEntry();
    793   if (!entry)
    794     return ScopedJavaLocalRef<jbyteArray>();
    795   // Get the certificate
    796   int cert_id = entry->GetSSL().cert_id;
    797   scoped_refptr<net::X509Certificate> cert;
    798   bool ok = content::CertStore::GetInstance()->RetrieveCert(cert_id, &cert);
    799   if (!ok)
    800     return ScopedJavaLocalRef<jbyteArray>();
    801 
    802   // Convert the certificate and return it
    803   std::string der_string;
    804   net::X509Certificate::GetDEREncoded(cert->os_cert_handle(), &der_string);
    805   return base::android::ToJavaByteArray(env,
    806       reinterpret_cast<const uint8*>(der_string.data()), der_string.length());
    807 }
    808 
    809 void AwContents::RequestNewHitTestDataAt(JNIEnv* env, jobject obj,
    810                                          jint x, jint y) {
    811   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    812   render_view_host_ext_->RequestNewHitTestDataAt(x, y);
    813 }
    814 
    815 void AwContents::UpdateLastHitTestData(JNIEnv* env, jobject obj) {
    816   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    817   if (!render_view_host_ext_->HasNewHitTestData()) return;
    818 
    819   const AwHitTestData& data = render_view_host_ext_->GetLastHitTestData();
    820   render_view_host_ext_->MarkHitTestDataRead();
    821 
    822   // Make sure to null the Java object if data is empty/invalid.
    823   ScopedJavaLocalRef<jstring> extra_data_for_type;
    824   if (data.extra_data_for_type.length())
    825     extra_data_for_type = ConvertUTF8ToJavaString(
    826         env, data.extra_data_for_type);
    827 
    828   ScopedJavaLocalRef<jstring> href;
    829   if (data.href.length())
    830     href = ConvertUTF16ToJavaString(env, data.href);
    831 
    832   ScopedJavaLocalRef<jstring> anchor_text;
    833   if (data.anchor_text.length())
    834     anchor_text = ConvertUTF16ToJavaString(env, data.anchor_text);
    835 
    836   ScopedJavaLocalRef<jstring> img_src;
    837   if (data.img_src.is_valid())
    838     img_src = ConvertUTF8ToJavaString(env, data.img_src.spec());
    839 
    840   Java_AwContents_updateHitTestData(env,
    841                                     obj,
    842                                     data.type,
    843                                     extra_data_for_type.obj(),
    844                                     href.obj(),
    845                                     anchor_text.obj(),
    846                                     img_src.obj());
    847 }
    848 
    849 void AwContents::OnSizeChanged(JNIEnv* env, jobject obj,
    850                                int w, int h, int ow, int oh) {
    851   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    852   browser_view_renderer_.OnSizeChanged(w, h);
    853 }
    854 
    855 void AwContents::SetViewVisibility(JNIEnv* env, jobject obj, bool visible) {
    856   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    857   browser_view_renderer_.SetViewVisibility(visible);
    858 }
    859 
    860 void AwContents::SetWindowVisibility(JNIEnv* env, jobject obj, bool visible) {
    861   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    862   browser_view_renderer_.SetWindowVisibility(visible);
    863 }
    864 
    865 void AwContents::SetIsPaused(JNIEnv* env, jobject obj, bool paused) {
    866   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    867   browser_view_renderer_.SetIsPaused(paused);
    868   ContentViewCore* cvc =
    869       ContentViewCore::FromWebContents(web_contents_.get());
    870   if (cvc) {
    871     cvc->PauseOrResumeGeolocation(paused);
    872     cvc->PauseOrResumeVideoCaptureStream(paused);
    873     if (paused) {
    874       cvc->PauseVideo();
    875     }
    876   }
    877 }
    878 
    879 void AwContents::OnAttachedToWindow(JNIEnv* env, jobject obj, int w, int h) {
    880   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    881   browser_view_renderer_.OnAttachedToWindow(w, h);
    882 }
    883 
    884 void AwContents::InitializeHardwareDrawIfNeeded() {
    885   GLViewRendererManager* manager = GLViewRendererManager::GetInstance();
    886 
    887   base::AutoLock lock(render_thread_lock_);
    888   if (renderer_manager_key_ == manager->NullKey()) {
    889     renderer_manager_key_ = manager->PushBack(&shared_renderer_state_);
    890     DeferredGpuCommandService::SetInstance();
    891   }
    892 }
    893 
    894 void AwContents::OnDetachedFromWindow(JNIEnv* env, jobject obj) {
    895   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    896   ReleaseHardwareDrawIfNeeded();
    897   browser_view_renderer_.OnDetachedFromWindow();
    898 }
    899 
    900 void AwContents::ReleaseHardwareDrawIfNeeded() {
    901   InsideHardwareReleaseReset inside_reset(&shared_renderer_state_);
    902 
    903   JNIEnv* env = AttachCurrentThread();
    904   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    905   if (!obj.is_null())
    906     Java_AwContents_invalidateOnFunctorDestroy(env, obj.obj());
    907 
    908   bool hardware_initialized = browser_view_renderer_.hardware_enabled();
    909   if (hardware_initialized) {
    910     bool draw_functor_succeeded = RequestDrawGL(NULL, true);
    911     if (!draw_functor_succeeded) {
    912       LOG(ERROR) << "Unable to free GL resources. Has the Window leaked?";
    913       // Calling release on wrong thread intentionally.
    914       AwDrawGLInfo info;
    915       info.mode = AwDrawGLInfo::kModeProcess;
    916       DrawGL(&info);
    917     }
    918     browser_view_renderer_.ReleaseHardware();
    919   }
    920   DCHECK(!hardware_renderer_);
    921 
    922   GLViewRendererManager* manager = GLViewRendererManager::GetInstance();
    923 
    924   {
    925     base::AutoLock lock(render_thread_lock_);
    926     if (renderer_manager_key_ != manager->NullKey()) {
    927       manager->Remove(renderer_manager_key_);
    928       renderer_manager_key_ = manager->NullKey();
    929     }
    930   }
    931 
    932   if (hardware_initialized) {
    933     // Flush any invoke functors that's caused by OnDetachedFromWindow.
    934     RequestDrawGL(NULL, true);
    935   }
    936 }
    937 
    938 base::android::ScopedJavaLocalRef<jbyteArray>
    939 AwContents::GetOpaqueState(JNIEnv* env, jobject obj) {
    940   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    941   // Required optimization in WebViewClassic to not save any state if
    942   // there has been no navigations.
    943   if (!web_contents_->GetController().GetEntryCount())
    944     return ScopedJavaLocalRef<jbyteArray>();
    945 
    946   Pickle pickle;
    947   if (!WriteToPickle(*web_contents_, &pickle)) {
    948     return ScopedJavaLocalRef<jbyteArray>();
    949   } else {
    950     return base::android::ToJavaByteArray(env,
    951        reinterpret_cast<const uint8*>(pickle.data()), pickle.size());
    952   }
    953 }
    954 
    955 jboolean AwContents::RestoreFromOpaqueState(
    956     JNIEnv* env, jobject obj, jbyteArray state) {
    957   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    958   // TODO(boliu): This copy can be optimized out if this is a performance
    959   // problem.
    960   std::vector<uint8> state_vector;
    961   base::android::JavaByteArrayToByteVector(env, state, &state_vector);
    962 
    963   Pickle pickle(reinterpret_cast<const char*>(state_vector.begin()),
    964                 state_vector.size());
    965   PickleIterator iterator(pickle);
    966 
    967   return RestoreFromPickle(&iterator, web_contents_.get());
    968 }
    969 
    970 bool AwContents::OnDraw(JNIEnv* env,
    971                         jobject obj,
    972                         jobject canvas,
    973                         jboolean is_hardware_accelerated,
    974                         jint scroll_x,
    975                         jint scroll_y,
    976                         jint visible_left,
    977                         jint visible_top,
    978                         jint visible_right,
    979                         jint visible_bottom) {
    980   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    981   if (is_hardware_accelerated)
    982     InitializeHardwareDrawIfNeeded();
    983   return browser_view_renderer_.OnDraw(
    984       canvas,
    985       is_hardware_accelerated,
    986       gfx::Vector2d(scroll_x, scroll_y),
    987       gfx::Rect(visible_left,
    988                 visible_top,
    989                 visible_right - visible_left,
    990                 visible_bottom - visible_top));
    991 }
    992 
    993 void AwContents::SetPendingWebContentsForPopup(
    994     scoped_ptr<content::WebContents> pending) {
    995   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    996   if (pending_contents_.get()) {
    997     // TODO(benm): Support holding multiple pop up window requests.
    998     LOG(WARNING) << "Blocking popup window creation as an outstanding "
    999                  << "popup window is still pending.";
   1000     base::MessageLoop::current()->DeleteSoon(FROM_HERE, pending.release());
   1001     return;
   1002   }
   1003   pending_contents_.reset(new AwContents(pending.Pass()));
   1004 }
   1005 
   1006 void AwContents::FocusFirstNode(JNIEnv* env, jobject obj) {
   1007   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1008   web_contents_->FocusThroughTabTraversal(false);
   1009 }
   1010 
   1011 void AwContents::SetBackgroundColor(JNIEnv* env, jobject obj, jint color) {
   1012   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1013   render_view_host_ext_->SetBackgroundColor(color);
   1014 }
   1015 
   1016 jlong AwContents::ReleasePopupAwContents(JNIEnv* env, jobject obj) {
   1017   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1018   return reinterpret_cast<intptr_t>(pending_contents_.release());
   1019 }
   1020 
   1021 gfx::Point AwContents::GetLocationOnScreen() {
   1022   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1023   JNIEnv* env = AttachCurrentThread();
   1024   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   1025   if (obj.is_null())
   1026     return gfx::Point();
   1027   std::vector<int> location;
   1028   base::android::JavaIntArrayToIntVector(
   1029       env,
   1030       Java_AwContents_getLocationOnScreen(env, obj.obj()).obj(),
   1031       &location);
   1032   return gfx::Point(location[0], location[1]);
   1033 }
   1034 
   1035 void AwContents::ScrollContainerViewTo(gfx::Vector2d new_value) {
   1036   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1037   JNIEnv* env = AttachCurrentThread();
   1038   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   1039   if (obj.is_null())
   1040     return;
   1041   Java_AwContents_scrollContainerViewTo(
   1042       env, obj.obj(), new_value.x(), new_value.y());
   1043 }
   1044 
   1045 bool AwContents::IsFlingActive() const {
   1046   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1047   JNIEnv* env = AttachCurrentThread();
   1048   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   1049   if (obj.is_null())
   1050     return false;
   1051   return Java_AwContents_isFlingActive(env, obj.obj());
   1052 }
   1053 
   1054 void AwContents::UpdateScrollState(gfx::Vector2d max_scroll_offset,
   1055                                    gfx::SizeF contents_size_dip,
   1056                                    float page_scale_factor,
   1057                                    float min_page_scale_factor,
   1058                                    float max_page_scale_factor) {
   1059   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1060   JNIEnv* env = AttachCurrentThread();
   1061   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   1062   if (obj.is_null())
   1063     return;
   1064   Java_AwContents_updateScrollState(env,
   1065                                     obj.obj(),
   1066                                     max_scroll_offset.x(),
   1067                                     max_scroll_offset.y(),
   1068                                     contents_size_dip.width(),
   1069                                     contents_size_dip.height(),
   1070                                     page_scale_factor,
   1071                                     min_page_scale_factor,
   1072                                     max_page_scale_factor);
   1073 }
   1074 
   1075 void AwContents::DidOverscroll(gfx::Vector2d overscroll_delta) {
   1076   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1077   JNIEnv* env = AttachCurrentThread();
   1078   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   1079   if (obj.is_null())
   1080     return;
   1081   Java_AwContents_didOverscroll(
   1082       env, obj.obj(), overscroll_delta.x(), overscroll_delta.y());
   1083 }
   1084 
   1085 const BrowserViewRenderer* AwContents::GetBrowserViewRenderer() const {
   1086   return &browser_view_renderer_;
   1087 }
   1088 
   1089 void AwContents::SetDipScale(JNIEnv* env, jobject obj, jfloat dip_scale) {
   1090   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1091   browser_view_renderer_.SetDipScale(dip_scale);
   1092 }
   1093 
   1094 void AwContents::ScrollTo(JNIEnv* env, jobject obj, jint x, jint y) {
   1095   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1096   browser_view_renderer_.ScrollTo(gfx::Vector2d(x, y));
   1097 }
   1098 
   1099 void AwContents::OnWebLayoutPageScaleFactorChanged(float page_scale_factor) {
   1100   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1101   JNIEnv* env = AttachCurrentThread();
   1102   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   1103   if (obj.is_null())
   1104     return;
   1105   Java_AwContents_onWebLayoutPageScaleFactorChanged(env, obj.obj(),
   1106                                                          page_scale_factor);
   1107 }
   1108 
   1109 void AwContents::OnWebLayoutContentsSizeChanged(
   1110     const gfx::Size& contents_size) {
   1111   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1112   JNIEnv* env = AttachCurrentThread();
   1113   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   1114   if (obj.is_null())
   1115     return;
   1116   Java_AwContents_onWebLayoutContentsSizeChanged(
   1117       env, obj.obj(), contents_size.width(), contents_size.height());
   1118 }
   1119 
   1120 jlong AwContents::CapturePicture(JNIEnv* env,
   1121                                  jobject obj,
   1122                                  int width,
   1123                                  int height) {
   1124   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1125   return reinterpret_cast<intptr_t>(
   1126       new AwPicture(browser_view_renderer_.CapturePicture(width, height)));
   1127 }
   1128 
   1129 void AwContents::EnableOnNewPicture(JNIEnv* env,
   1130                                     jobject obj,
   1131                                     jboolean enabled) {
   1132   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1133   browser_view_renderer_.EnableOnNewPicture(enabled);
   1134 }
   1135 
   1136 void AwContents::ClearView(JNIEnv* env, jobject obj) {
   1137   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1138   browser_view_renderer_.ClearView();
   1139 }
   1140 
   1141 void AwContents::SetExtraHeadersForUrl(JNIEnv* env, jobject obj,
   1142                                        jstring url, jstring jextra_headers) {
   1143   std::string extra_headers;
   1144   if (jextra_headers)
   1145     extra_headers = ConvertJavaStringToUTF8(env, jextra_headers);
   1146   AwResourceContext* resource_context = static_cast<AwResourceContext*>(
   1147       AwBrowserContext::FromWebContents(web_contents_.get())->
   1148       GetResourceContext());
   1149   resource_context->SetExtraHeaders(GURL(ConvertJavaStringToUTF8(env, url)),
   1150                                     extra_headers);
   1151 }
   1152 
   1153 void AwContents::SetJsOnlineProperty(JNIEnv* env,
   1154                                      jobject obj,
   1155                                      jboolean network_up) {
   1156   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1157   render_view_host_ext_->SetJsOnlineProperty(network_up);
   1158 }
   1159 
   1160 void AwContents::TrimMemory(JNIEnv* env,
   1161                             jobject obj,
   1162                             jint level,
   1163                             jboolean visible) {
   1164   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   1165   enum {
   1166     TRIM_MEMORY_MODERATE = 60,
   1167   };
   1168   if (level >= TRIM_MEMORY_MODERATE) {
   1169     ReleaseHardwareDrawIfNeeded();
   1170     return;
   1171   }
   1172 
   1173   browser_view_renderer_.TrimMemory(level, visible);
   1174 }
   1175 
   1176 void SetShouldDownloadFavicons(JNIEnv* env, jclass jclazz) {
   1177   g_should_download_favicons = true;
   1178 }
   1179 
   1180 }  // namespace android_webview
   1181