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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 "content/browser/android/content_view_core_impl.h"
      6 
      7 #include "base/android/jni_android.h"
      8 #include "base/android/jni_array.h"
      9 #include "base/android/jni_string.h"
     10 #include "base/android/scoped_java_ref.h"
     11 #include "base/command_line.h"
     12 #include "base/json/json_writer.h"
     13 #include "base/logging.h"
     14 #include "base/strings/utf_string_conversions.h"
     15 #include "base/values.h"
     16 #include "cc/layers/layer.h"
     17 #include "cc/output/begin_frame_args.h"
     18 #include "content/browser/android/browser_media_player_manager.h"
     19 #include "content/browser/android/interstitial_page_delegate_android.h"
     20 #include "content/browser/android/load_url_params.h"
     21 #include "content/browser/android/touch_point.h"
     22 #include "content/browser/renderer_host/compositor_impl_android.h"
     23 #include "content/browser/renderer_host/input/web_input_event_builders_android.h"
     24 #include "content/browser/renderer_host/java/java_bound_object.h"
     25 #include "content/browser/renderer_host/java/java_bridge_dispatcher_host_manager.h"
     26 #include "content/browser/renderer_host/render_view_host_impl.h"
     27 #include "content/browser/renderer_host/render_widget_host_impl.h"
     28 #include "content/browser/renderer_host/render_widget_host_view_android.h"
     29 #include "content/browser/ssl/ssl_host_state.h"
     30 #include "content/browser/web_contents/interstitial_page_impl.h"
     31 #include "content/browser/web_contents/navigation_controller_impl.h"
     32 #include "content/browser/web_contents/navigation_entry_impl.h"
     33 #include "content/browser/web_contents/web_contents_view_android.h"
     34 #include "content/common/input_messages.h"
     35 #include "content/common/view_messages.h"
     36 #include "content/public/browser/browser_accessibility_state.h"
     37 #include "content/public/browser/browser_context.h"
     38 #include "content/public/browser/favicon_status.h"
     39 #include "content/public/browser/notification_details.h"
     40 #include "content/public/browser/notification_service.h"
     41 #include "content/public/browser/notification_source.h"
     42 #include "content/public/browser/notification_types.h"
     43 #include "content/public/browser/web_contents.h"
     44 #include "content/public/common/content_client.h"
     45 #include "content/public/common/content_switches.h"
     46 #include "content/public/common/menu_item.h"
     47 #include "content/public/common/page_transition_types.h"
     48 #include "jni/ContentViewCore_jni.h"
     49 #include "third_party/WebKit/public/web/WebBindings.h"
     50 #include "third_party/WebKit/public/web/WebInputEvent.h"
     51 #include "ui/android/view_android.h"
     52 #include "ui/android/window_android.h"
     53 #include "ui/gfx/android/java_bitmap.h"
     54 #include "ui/gfx/screen.h"
     55 #include "ui/gfx/size_conversions.h"
     56 #include "ui/gfx/size_f.h"
     57 #include "webkit/common/user_agent/user_agent_util.h"
     58 
     59 using base::android::AttachCurrentThread;
     60 using base::android::ConvertJavaStringToUTF16;
     61 using base::android::ConvertJavaStringToUTF8;
     62 using base::android::ConvertUTF16ToJavaString;
     63 using base::android::ConvertUTF8ToJavaString;
     64 using base::android::ScopedJavaGlobalRef;
     65 using base::android::ScopedJavaLocalRef;
     66 using WebKit::WebGestureEvent;
     67 using WebKit::WebInputEvent;
     68 
     69 // Describes the type and enabled state of a select popup item.
     70 // Keep in sync with the value defined in SelectPopupDialog.java
     71 enum PopupItemType {
     72   POPUP_ITEM_TYPE_GROUP = 0,
     73   POPUP_ITEM_TYPE_DISABLED,
     74   POPUP_ITEM_TYPE_ENABLED
     75 };
     76 
     77 namespace content {
     78 
     79 namespace {
     80 
     81 const unsigned int kDefaultVSyncIntervalMicros = 16666u;
     82 // TODO(brianderson): Use adaptive draw-time estimation.
     83 const float kDefaultBrowserCompositeVSyncFraction = 1.0f / 3;
     84 
     85 const void* kContentViewUserDataKey = &kContentViewUserDataKey;
     86 
     87 int GetRenderProcessIdFromRenderViewHost(RenderViewHost* host) {
     88   DCHECK(host);
     89   RenderProcessHost* render_process = host->GetProcess();
     90   DCHECK(render_process);
     91   if (render_process->HasConnection())
     92     return render_process->GetHandle();
     93   else
     94     return 0;
     95 }
     96 
     97 ScopedJavaLocalRef<jobject> CreateJavaRect(
     98     JNIEnv* env,
     99     const gfx::Rect& rect) {
    100   return ScopedJavaLocalRef<jobject>(
    101       Java_ContentViewCore_createRect(env,
    102                                       static_cast<int>(rect.x()),
    103                                       static_cast<int>(rect.y()),
    104                                       static_cast<int>(rect.right()),
    105                                       static_cast<int>(rect.bottom())));
    106 };
    107 }  // namespace
    108 
    109 // Enables a callback when the underlying WebContents is destroyed, to enable
    110 // nulling the back-pointer.
    111 class ContentViewCoreImpl::ContentViewUserData
    112     : public base::SupportsUserData::Data {
    113  public:
    114   explicit ContentViewUserData(ContentViewCoreImpl* content_view_core)
    115       : content_view_core_(content_view_core) {
    116   }
    117 
    118   virtual ~ContentViewUserData() {
    119     // TODO(joth): When chrome has finished removing the TabContents class (see
    120     // crbug.com/107201) consider inverting relationship, so ContentViewCore
    121     // would own WebContents. That effectively implies making the WebContents
    122     // destructor private on Android.
    123     delete content_view_core_;
    124   }
    125 
    126   ContentViewCoreImpl* get() const { return content_view_core_; }
    127 
    128  private:
    129   // Not using scoped_ptr as ContentViewCoreImpl destructor is private.
    130   ContentViewCoreImpl* content_view_core_;
    131 
    132   DISALLOW_IMPLICIT_CONSTRUCTORS(ContentViewUserData);
    133 };
    134 
    135 // static
    136 ContentViewCoreImpl* ContentViewCoreImpl::FromWebContents(
    137     content::WebContents* web_contents) {
    138   ContentViewCoreImpl::ContentViewUserData* data =
    139       reinterpret_cast<ContentViewCoreImpl::ContentViewUserData*>(
    140           web_contents->GetUserData(kContentViewUserDataKey));
    141   return data ? data->get() : NULL;
    142 }
    143 
    144 // static
    145 ContentViewCore* ContentViewCore::FromWebContents(
    146     content::WebContents* web_contents) {
    147   return ContentViewCoreImpl::FromWebContents(web_contents);
    148 }
    149 
    150 // static
    151 ContentViewCore* ContentViewCore::GetNativeContentViewCore(JNIEnv* env,
    152                                                            jobject obj) {
    153   return reinterpret_cast<ContentViewCore*>(
    154       Java_ContentViewCore_getNativeContentViewCore(env, obj));
    155 }
    156 
    157 ContentViewCoreImpl::ContentViewCoreImpl(JNIEnv* env, jobject obj,
    158                                          bool hardware_accelerated,
    159                                          WebContents* web_contents,
    160                                          ui::ViewAndroid* view_android,
    161                                          ui::WindowAndroid* window_android)
    162     : java_ref_(env, obj),
    163       web_contents_(static_cast<WebContentsImpl*>(web_contents)),
    164       root_layer_(cc::Layer::Create()),
    165       tab_crashed_(false),
    166       vsync_interval_(base::TimeDelta::FromMicroseconds(
    167           kDefaultVSyncIntervalMicros)),
    168       expected_browser_composite_time_(base::TimeDelta::FromMicroseconds(
    169           kDefaultVSyncIntervalMicros * kDefaultBrowserCompositeVSyncFraction)),
    170       view_android_(view_android),
    171       window_android_(window_android) {
    172   CHECK(web_contents) <<
    173       "A ContentViewCoreImpl should be created with a valid WebContents.";
    174 
    175   // When a tab is restored (from a saved state), it does not have a renderer
    176   // process. We treat it like the tab is crashed. If the content is loaded
    177   // when the tab is shown, tab_crashed_ will be reset.
    178   UpdateTabCrashedFlag();
    179 
    180   // TODO(leandrogracia): make use of the hardware_accelerated argument.
    181 
    182   const gfx::Display& display =
    183       gfx::Screen::GetNativeScreen()->GetPrimaryDisplay();
    184   dpi_scale_ = display.device_scale_factor();
    185 
    186   // Currently, the only use case we have for overriding a user agent involves
    187   // spoofing a desktop Linux user agent for "Request desktop site".
    188   // Automatically set it for all WebContents so that it is available when a
    189   // NavigationEntry requires the user agent to be overridden.
    190   const char kLinuxInfoStr[] = "X11; Linux x86_64";
    191   std::string product = content::GetContentClient()->GetProduct();
    192   std::string spoofed_ua =
    193       webkit_glue::BuildUserAgentFromOSAndProduct(kLinuxInfoStr, product);
    194   web_contents->SetUserAgentOverride(spoofed_ua);
    195 
    196   InitWebContents();
    197 }
    198 
    199 ContentViewCoreImpl::~ContentViewCoreImpl() {
    200   JNIEnv* env = base::android::AttachCurrentThread();
    201   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    202   java_ref_.reset();
    203   if (!j_obj.is_null()) {
    204     Java_ContentViewCore_onNativeContentViewCoreDestroyed(
    205         env, j_obj.obj(), reinterpret_cast<jint>(this));
    206   }
    207   // Make sure nobody calls back into this object while we are tearing things
    208   // down.
    209   notification_registrar_.RemoveAll();
    210 }
    211 
    212 void ContentViewCoreImpl::OnJavaContentViewCoreDestroyed(JNIEnv* env,
    213                                                          jobject obj) {
    214   DCHECK(env->IsSameObject(java_ref_.get(env).obj(), obj));
    215   java_ref_.reset();
    216 }
    217 
    218 void ContentViewCoreImpl::InitWebContents() {
    219   DCHECK(web_contents_);
    220   notification_registrar_.Add(
    221       this, NOTIFICATION_RENDER_VIEW_HOST_CHANGED,
    222       Source<NavigationController>(&web_contents_->GetController()));
    223   notification_registrar_.Add(
    224       this, NOTIFICATION_RENDERER_PROCESS_CREATED,
    225       content::NotificationService::AllBrowserContextsAndSources());
    226   notification_registrar_.Add(
    227       this, NOTIFICATION_WEB_CONTENTS_CONNECTED,
    228       Source<WebContents>(web_contents_));
    229   notification_registrar_.Add(
    230       this, NOTIFICATION_WEB_CONTENTS_SWAPPED,
    231       Source<WebContents>(web_contents_));
    232 
    233   static_cast<WebContentsViewAndroid*>(web_contents_->GetView())->
    234       SetContentViewCore(this);
    235   DCHECK(!web_contents_->GetUserData(kContentViewUserDataKey));
    236   web_contents_->SetUserData(kContentViewUserDataKey,
    237                              new ContentViewUserData(this));
    238 }
    239 
    240 void ContentViewCoreImpl::Observe(int type,
    241                                   const NotificationSource& source,
    242                                   const NotificationDetails& details) {
    243   switch (type) {
    244     case NOTIFICATION_RENDER_VIEW_HOST_CHANGED: {
    245       std::pair<RenderViewHost*, RenderViewHost*>* switched_details =
    246           Details<std::pair<RenderViewHost*, RenderViewHost*> >(details).ptr();
    247       int old_pid = 0;
    248       if (switched_details->first) {
    249         old_pid = GetRenderProcessIdFromRenderViewHost(
    250             switched_details->first);
    251       }
    252       int new_pid = GetRenderProcessIdFromRenderViewHost(
    253           web_contents_->GetRenderViewHost());
    254       if (new_pid != old_pid) {
    255         // Notify the Java side of the change of the current renderer process.
    256         JNIEnv* env = AttachCurrentThread();
    257         ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    258         if (!obj.is_null()) {
    259           Java_ContentViewCore_onRenderProcessSwap(
    260               env, obj.obj(), old_pid, new_pid);
    261         }
    262       }
    263       SetFocusInternal(HasFocus());
    264       break;
    265     }
    266     case NOTIFICATION_RENDERER_PROCESS_CREATED: {
    267       // Notify the Java side of the current renderer process.
    268       RenderProcessHost* source_process_host =
    269           Source<RenderProcessHost>(source).ptr();
    270       RenderProcessHost* current_process_host =
    271           web_contents_->GetRenderViewHost()->GetProcess();
    272 
    273       if (source_process_host == current_process_host) {
    274         int pid = GetRenderProcessIdFromRenderViewHost(
    275             web_contents_->GetRenderViewHost());
    276         JNIEnv* env = AttachCurrentThread();
    277         ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    278         if (!obj.is_null()) {
    279           Java_ContentViewCore_onRenderProcessSwap(env, obj.obj(), 0, pid);
    280         }
    281       }
    282       break;
    283     }
    284     case NOTIFICATION_WEB_CONTENTS_CONNECTED: {
    285       JNIEnv* env = AttachCurrentThread();
    286       ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    287       if (!obj.is_null()) {
    288         Java_ContentViewCore_onWebContentsConnected(env, obj.obj());
    289       }
    290       break;
    291     }
    292     case NOTIFICATION_WEB_CONTENTS_SWAPPED: {
    293       JNIEnv* env = AttachCurrentThread();
    294       ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    295       if (!obj.is_null()) {
    296         Java_ContentViewCore_onWebContentsSwapped(env, obj.obj());
    297       }
    298     }
    299   }
    300 }
    301 
    302 RenderWidgetHostViewAndroid*
    303     ContentViewCoreImpl::GetRenderWidgetHostViewAndroid() {
    304   RenderWidgetHostView* rwhv = NULL;
    305   if (web_contents_) {
    306     rwhv = web_contents_->GetRenderWidgetHostView();
    307     if (web_contents_->ShowingInterstitialPage()) {
    308       rwhv = static_cast<InterstitialPageImpl*>(
    309           web_contents_->GetInterstitialPage())->
    310               GetRenderViewHost()->GetView();
    311     }
    312   }
    313   return static_cast<RenderWidgetHostViewAndroid*>(rwhv);
    314 }
    315 
    316 ScopedJavaLocalRef<jobject> ContentViewCoreImpl::GetJavaObject() {
    317   JNIEnv* env = AttachCurrentThread();
    318   return java_ref_.get(env);
    319 }
    320 
    321 jint ContentViewCoreImpl::GetBackgroundColor(JNIEnv* env, jobject obj) {
    322   RenderWidgetHostViewAndroid* rwhva = GetRenderWidgetHostViewAndroid();
    323   if (!rwhva)
    324     return SK_ColorWHITE;
    325   return rwhva->GetCachedBackgroundColor();
    326 }
    327 
    328 void ContentViewCoreImpl::OnHide(JNIEnv* env, jobject obj) {
    329   Hide();
    330 }
    331 
    332 void ContentViewCoreImpl::OnShow(JNIEnv* env, jobject obj) {
    333   Show();
    334 }
    335 
    336 void ContentViewCoreImpl::Show() {
    337   GetWebContents()->WasShown();
    338   // Displaying WebContents may trigger a lazy reload, spawning a new renderer
    339   // for the tab.
    340   UpdateTabCrashedFlag();
    341 }
    342 
    343 void ContentViewCoreImpl::Hide() {
    344   GetWebContents()->WasHidden();
    345   PauseVideo();
    346 }
    347 
    348 void ContentViewCoreImpl::PauseVideo() {
    349   RenderViewHost* host = web_contents_->GetRenderViewHost();
    350   if (host)
    351     host->Send(new ViewMsg_PauseVideo(host->GetRoutingID()));
    352 }
    353 
    354 void ContentViewCoreImpl::OnTabCrashed() {
    355   JNIEnv* env = AttachCurrentThread();
    356   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    357   if (obj.is_null())
    358     return;
    359   Java_ContentViewCore_resetVSyncNotification(env, obj.obj());
    360 
    361   // Note that we might reach this place multiple times while the
    362   // ContentViewCore remains crashed. E.g. if two tabs share the render process
    363   // and the process crashes, this will be called for each tab. If the user
    364   // reload one tab, a new render process is created and it can be shared by the
    365   // other tab. But if user closes the reloaded tab before reloading the other
    366   // tab, the new render process will be shut down. This will trigger the other
    367   // tab's OnTabCrashed() called again as two tabs share the same
    368   // BrowserRenderProcessHost. The Java side will distinguish this case using
    369   // tab_crashed_ passed below.
    370   Java_ContentViewCore_onTabCrash(env, obj.obj(), tab_crashed_);
    371   tab_crashed_ = true;
    372 }
    373 
    374 // All positions and sizes are in CSS pixels.
    375 // Note that viewport_width/height is a best effort based.
    376 // ContentViewCore has the actual information about the physical viewport size.
    377 void ContentViewCoreImpl::UpdateFrameInfo(
    378     const gfx::Vector2dF& scroll_offset,
    379     float page_scale_factor,
    380     const gfx::Vector2dF& page_scale_factor_limits,
    381     const gfx::SizeF& content_size,
    382     const gfx::SizeF& viewport_size,
    383     const gfx::Vector2dF& controls_offset,
    384     const gfx::Vector2dF& content_offset,
    385     float overdraw_bottom_height) {
    386   JNIEnv* env = AttachCurrentThread();
    387   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    388   if (obj.is_null())
    389     return;
    390 
    391   Java_ContentViewCore_updateFrameInfo(
    392       env, obj.obj(),
    393       scroll_offset.x(),
    394       scroll_offset.y(),
    395       page_scale_factor,
    396       page_scale_factor_limits.x(),
    397       page_scale_factor_limits.y(),
    398       content_size.width(),
    399       content_size.height(),
    400       viewport_size.width(),
    401       viewport_size.height(),
    402       controls_offset.y(),
    403       content_offset.y(),
    404       overdraw_bottom_height);
    405 }
    406 
    407 void ContentViewCoreImpl::SetTitle(const string16& title) {
    408   JNIEnv* env = AttachCurrentThread();
    409   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    410   if (obj.is_null())
    411     return;
    412   ScopedJavaLocalRef<jstring> jtitle =
    413       ConvertUTF8ToJavaString(env, UTF16ToUTF8(title));
    414   Java_ContentViewCore_setTitle(env, obj.obj(), jtitle.obj());
    415 }
    416 
    417 void ContentViewCoreImpl::OnBackgroundColorChanged(SkColor color) {
    418   JNIEnv* env = AttachCurrentThread();
    419   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    420   if (obj.is_null())
    421     return;
    422   Java_ContentViewCore_onBackgroundColorChanged(env, obj.obj(), color);
    423 }
    424 
    425 void ContentViewCoreImpl::ShowSelectPopupMenu(
    426     const std::vector<MenuItem>& items, int selected_item, bool multiple) {
    427   JNIEnv* env = AttachCurrentThread();
    428   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    429   if (j_obj.is_null())
    430     return;
    431 
    432   // For multi-select list popups we find the list of previous selections by
    433   // iterating through the items. But for single selection popups we take the
    434   // given |selected_item| as is.
    435   ScopedJavaLocalRef<jintArray> selected_array;
    436   if (multiple) {
    437     scoped_ptr<jint[]> native_selected_array(new jint[items.size()]);
    438     size_t selected_count = 0;
    439     for (size_t i = 0; i < items.size(); ++i) {
    440       if (items[i].checked)
    441         native_selected_array[selected_count++] = i;
    442     }
    443 
    444     selected_array = ScopedJavaLocalRef<jintArray>(
    445         env, env->NewIntArray(selected_count));
    446     env->SetIntArrayRegion(selected_array.obj(), 0, selected_count,
    447                            native_selected_array.get());
    448   } else {
    449     selected_array = ScopedJavaLocalRef<jintArray>(env, env->NewIntArray(1));
    450     jint value = selected_item;
    451     env->SetIntArrayRegion(selected_array.obj(), 0, 1, &value);
    452   }
    453 
    454   ScopedJavaLocalRef<jintArray> enabled_array(env,
    455                                               env->NewIntArray(items.size()));
    456   std::vector<string16> labels;
    457   labels.reserve(items.size());
    458   for (size_t i = 0; i < items.size(); ++i) {
    459     labels.push_back(items[i].label);
    460     jint enabled =
    461         (items[i].type == MenuItem::GROUP ? POPUP_ITEM_TYPE_GROUP :
    462             (items[i].enabled ? POPUP_ITEM_TYPE_ENABLED :
    463                 POPUP_ITEM_TYPE_DISABLED));
    464     env->SetIntArrayRegion(enabled_array.obj(), i, 1, &enabled);
    465   }
    466   ScopedJavaLocalRef<jobjectArray> items_array(
    467       base::android::ToJavaArrayOfStrings(env, labels));
    468   Java_ContentViewCore_showSelectPopup(env, j_obj.obj(),
    469                                        items_array.obj(), enabled_array.obj(),
    470                                        multiple, selected_array.obj());
    471 }
    472 
    473 void ContentViewCoreImpl::ConfirmTouchEvent(InputEventAckState ack_result) {
    474   JNIEnv* env = AttachCurrentThread();
    475   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    476   if (j_obj.is_null())
    477     return;
    478   Java_ContentViewCore_confirmTouchEvent(env, j_obj.obj(),
    479                                          static_cast<jint>(ack_result));
    480 }
    481 
    482 void ContentViewCoreImpl::UnhandledFlingStartEvent() {
    483   JNIEnv* env = AttachCurrentThread();
    484   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    485   if (j_obj.is_null())
    486     return;
    487   Java_ContentViewCore_unhandledFlingStartEvent(env, j_obj.obj());
    488 }
    489 
    490 void ContentViewCoreImpl::HasTouchEventHandlers(bool need_touch_events) {
    491   JNIEnv* env = AttachCurrentThread();
    492   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    493   if (j_obj.is_null())
    494     return;
    495   Java_ContentViewCore_hasTouchEventHandlers(env,
    496                                              j_obj.obj(),
    497                                              need_touch_events);
    498 }
    499 
    500 bool ContentViewCoreImpl::HasFocus() {
    501   JNIEnv* env = AttachCurrentThread();
    502   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    503   if (obj.is_null())
    504     return false;
    505   return Java_ContentViewCore_hasFocus(env, obj.obj());
    506 }
    507 
    508 void ContentViewCoreImpl::OnSelectionChanged(const std::string& text) {
    509   JNIEnv* env = AttachCurrentThread();
    510   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    511   if (obj.is_null())
    512     return;
    513   ScopedJavaLocalRef<jstring> jtext = ConvertUTF8ToJavaString(env, text);
    514   Java_ContentViewCore_onSelectionChanged(env, obj.obj(), jtext.obj());
    515 }
    516 
    517 void ContentViewCoreImpl::OnSelectionBoundsChanged(
    518     const ViewHostMsg_SelectionBounds_Params& params) {
    519   JNIEnv* env = AttachCurrentThread();
    520   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    521   if (obj.is_null())
    522     return;
    523   ScopedJavaLocalRef<jobject> anchor_rect_dip(
    524       CreateJavaRect(env, params.anchor_rect));
    525   ScopedJavaLocalRef<jobject> focus_rect_dip(
    526       CreateJavaRect(env, params.focus_rect));
    527   Java_ContentViewCore_onSelectionBoundsChanged(env, obj.obj(),
    528                                                 anchor_rect_dip.obj(),
    529                                                 params.anchor_dir,
    530                                                 focus_rect_dip.obj(),
    531                                                 params.focus_dir,
    532                                                 params.is_anchor_first);
    533 }
    534 
    535 void ContentViewCoreImpl::ShowPastePopup(int x_dip, int y_dip) {
    536   JNIEnv* env = AttachCurrentThread();
    537   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    538   if (obj.is_null())
    539     return;
    540   Java_ContentViewCore_showPastePopup(env, obj.obj(),
    541                                       static_cast<jint>(x_dip),
    542                                       static_cast<jint>(y_dip));
    543 }
    544 
    545 unsigned int ContentViewCoreImpl::GetScaledContentTexture(
    546     float scale,
    547     gfx::Size* out_size) {
    548   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
    549   if (!view)
    550     return 0;
    551 
    552   return view->GetScaledContentTexture(scale, out_size);
    553 }
    554 
    555 void ContentViewCoreImpl::StartContentIntent(const GURL& content_url) {
    556   JNIEnv* env = AttachCurrentThread();
    557   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    558   if (j_obj.is_null())
    559     return;
    560   ScopedJavaLocalRef<jstring> jcontent_url =
    561       ConvertUTF8ToJavaString(env, content_url.spec());
    562   Java_ContentViewCore_startContentIntent(env,
    563                                           j_obj.obj(),
    564                                           jcontent_url.obj());
    565 }
    566 
    567 void ContentViewCoreImpl::ShowDisambiguationPopup(
    568     const gfx::Rect& target_rect,
    569     const SkBitmap& zoomed_bitmap) {
    570   JNIEnv* env = AttachCurrentThread();
    571 
    572   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    573   if (obj.is_null())
    574     return;
    575 
    576   ScopedJavaLocalRef<jobject> rect_object(CreateJavaRect(env, target_rect));
    577 
    578   ScopedJavaLocalRef<jobject> java_bitmap =
    579       gfx::ConvertToJavaBitmap(&zoomed_bitmap);
    580   DCHECK(!java_bitmap.is_null());
    581 
    582   Java_ContentViewCore_showDisambiguationPopup(env,
    583                                                obj.obj(),
    584                                                rect_object.obj(),
    585                                                java_bitmap.obj());
    586 }
    587 
    588 ScopedJavaLocalRef<jobject> ContentViewCoreImpl::CreateSmoothScroller(
    589     bool scroll_down, int mouse_event_x, int mouse_event_y) {
    590   JNIEnv* env = AttachCurrentThread();
    591 
    592   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    593   if (obj.is_null())
    594     return ScopedJavaLocalRef<jobject>();
    595   return Java_ContentViewCore_createSmoothScroller(
    596       env, obj.obj(), scroll_down, mouse_event_x, mouse_event_y);
    597 }
    598 
    599 void ContentViewCoreImpl::NotifyExternalSurface(
    600     int player_id, bool is_request, const gfx::RectF& rect) {
    601   JNIEnv* env = AttachCurrentThread();
    602 
    603   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    604   if (obj.is_null())
    605     return;
    606 
    607   Java_ContentViewCore_notifyExternalSurface(
    608       env,
    609       obj.obj(),
    610       static_cast<jint>(player_id),
    611       static_cast<jboolean>(is_request),
    612       static_cast<jfloat>(rect.x()),
    613       static_cast<jfloat>(rect.y()),
    614       static_cast<jfloat>(rect.width()),
    615       static_cast<jfloat>(rect.height()));
    616 }
    617 
    618 ScopedJavaLocalRef<jobject> ContentViewCoreImpl::GetContentVideoViewClient() {
    619   JNIEnv* env = AttachCurrentThread();
    620 
    621   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    622   if (obj.is_null())
    623     return ScopedJavaLocalRef<jobject>();
    624 
    625   return Java_ContentViewCore_getContentVideoViewClient(env, obj.obj());
    626 }
    627 
    628 ScopedJavaLocalRef<jobject> ContentViewCoreImpl::GetContext() {
    629   JNIEnv* env = AttachCurrentThread();
    630 
    631   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    632   if (obj.is_null())
    633     return ScopedJavaLocalRef<jobject>();
    634 
    635   return Java_ContentViewCore_getContext(env, obj.obj());
    636 }
    637 
    638 gfx::Size ContentViewCoreImpl::GetPhysicalBackingSize() const {
    639   JNIEnv* env = AttachCurrentThread();
    640   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    641   if (j_obj.is_null())
    642     return gfx::Size();
    643   return gfx::Size(
    644       Java_ContentViewCore_getPhysicalBackingWidthPix(env, j_obj.obj()),
    645       Java_ContentViewCore_getPhysicalBackingHeightPix(env, j_obj.obj()));
    646 }
    647 
    648 gfx::Size ContentViewCoreImpl::GetViewportSizePix() const {
    649   JNIEnv* env = AttachCurrentThread();
    650   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    651   if (j_obj.is_null())
    652     return gfx::Size();
    653   return gfx::Size(
    654       Java_ContentViewCore_getViewportWidthPix(env, j_obj.obj()),
    655       Java_ContentViewCore_getViewportHeightPix(env, j_obj.obj()));
    656 }
    657 
    658 gfx::Size ContentViewCoreImpl::GetViewportSizeOffsetPix() const {
    659   JNIEnv* env = AttachCurrentThread();
    660   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    661   if (j_obj.is_null())
    662     return gfx::Size();
    663   return gfx::Size(
    664       Java_ContentViewCore_getViewportSizeOffsetWidthPix(env, j_obj.obj()),
    665       Java_ContentViewCore_getViewportSizeOffsetHeightPix(env, j_obj.obj()));
    666 }
    667 
    668 gfx::Size ContentViewCoreImpl::GetViewportSizeDip() const {
    669   return gfx::ToCeiledSize(
    670       gfx::ScaleSize(GetViewportSizePix(), 1.0f / GetDpiScale()));
    671 }
    672 
    673 gfx::Size ContentViewCoreImpl::GetViewportSizeOffsetDip() const {
    674   return gfx::ToCeiledSize(
    675       gfx::ScaleSize(GetViewportSizeOffsetPix(), 1.0f / GetDpiScale()));
    676 }
    677 
    678 float ContentViewCoreImpl::GetOverdrawBottomHeightDip() const {
    679   JNIEnv* env = AttachCurrentThread();
    680   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
    681   if (j_obj.is_null())
    682     return 0.f;
    683   return Java_ContentViewCore_getOverdrawBottomHeightPix(env, j_obj.obj())
    684       / GetDpiScale();
    685 }
    686 
    687 void ContentViewCoreImpl::AttachLayer(scoped_refptr<cc::Layer> layer) {
    688   root_layer_->AddChild(layer);
    689 }
    690 
    691 void ContentViewCoreImpl::RemoveLayer(scoped_refptr<cc::Layer> layer) {
    692   layer->RemoveFromParent();
    693 }
    694 
    695 void ContentViewCoreImpl::LoadUrl(
    696     NavigationController::LoadURLParams& params) {
    697   GetWebContents()->GetController().LoadURLWithParams(params);
    698   UpdateTabCrashedFlag();
    699 }
    700 
    701 void ContentViewCoreImpl::SetNeedsBeginFrame(bool enabled) {
    702   JNIEnv* env = AttachCurrentThread();
    703   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    704   if (obj.is_null())
    705     return;
    706   Java_ContentViewCore_setVSyncNotificationEnabled(
    707       env, obj.obj(), static_cast<jboolean>(enabled));
    708 }
    709 
    710 void ContentViewCoreImpl::SetNeedsAnimate() {
    711   JNIEnv* env = AttachCurrentThread();
    712   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
    713   if (obj.is_null())
    714     return;
    715   Java_ContentViewCore_setNeedsAnimate(env, obj.obj());
    716 }
    717 
    718 ui::ViewAndroid* ContentViewCoreImpl::GetViewAndroid() const {
    719   // view_android_ should never be null for Chrome.
    720   DCHECK(view_android_);
    721   return view_android_;
    722 }
    723 
    724 ui::WindowAndroid* ContentViewCoreImpl::GetWindowAndroid() const {
    725   // This should never be NULL for Chrome, but will be NULL for WebView.
    726   DCHECK(window_android_);
    727   return window_android_;
    728 }
    729 
    730 scoped_refptr<cc::Layer> ContentViewCoreImpl::GetLayer() const {
    731   return root_layer_.get();
    732 }
    733 
    734 // ----------------------------------------------------------------------------
    735 // Methods called from Java via JNI
    736 // ----------------------------------------------------------------------------
    737 
    738 void ContentViewCoreImpl::SelectPopupMenuItems(JNIEnv* env, jobject obj,
    739                                                jintArray indices) {
    740   RenderViewHostImpl* rvhi = static_cast<RenderViewHostImpl*>(
    741       web_contents_->GetRenderViewHost());
    742   DCHECK(rvhi);
    743   if (indices == NULL) {
    744     rvhi->DidCancelPopupMenu();
    745     return;
    746   }
    747 
    748   int selected_count = env->GetArrayLength(indices);
    749   std::vector<int> selected_indices;
    750   jint* indices_ptr = env->GetIntArrayElements(indices, NULL);
    751   for (int i = 0; i < selected_count; ++i)
    752     selected_indices.push_back(indices_ptr[i]);
    753   env->ReleaseIntArrayElements(indices, indices_ptr, JNI_ABORT);
    754   rvhi->DidSelectPopupMenuItems(selected_indices);
    755 }
    756 
    757 void ContentViewCoreImpl::LoadUrl(
    758     JNIEnv* env, jobject obj,
    759     jstring url,
    760     jint load_url_type,
    761     jint transition_type,
    762     jint ua_override_option,
    763     jstring extra_headers,
    764     jbyteArray post_data,
    765     jstring base_url_for_data_url,
    766     jstring virtual_url_for_data_url,
    767     jboolean can_load_local_resources) {
    768   DCHECK(url);
    769   NavigationController::LoadURLParams params(
    770       GURL(ConvertJavaStringToUTF8(env, url)));
    771 
    772   params.load_type = static_cast<NavigationController::LoadURLType>(
    773       load_url_type);
    774   params.transition_type = PageTransitionFromInt(transition_type);
    775   params.override_user_agent =
    776       static_cast<NavigationController::UserAgentOverrideOption>(
    777           ua_override_option);
    778 
    779   if (extra_headers)
    780     params.extra_headers = ConvertJavaStringToUTF8(env, extra_headers);
    781 
    782   if (post_data) {
    783     std::vector<uint8> http_body_vector;
    784     base::android::JavaByteArrayToByteVector(env, post_data, &http_body_vector);
    785     params.browser_initiated_post_data =
    786         base::RefCountedBytes::TakeVector(&http_body_vector);
    787   }
    788 
    789   if (base_url_for_data_url) {
    790     params.base_url_for_data_url =
    791         GURL(ConvertJavaStringToUTF8(env, base_url_for_data_url));
    792   }
    793 
    794   if (virtual_url_for_data_url) {
    795     params.virtual_url_for_data_url =
    796         GURL(ConvertJavaStringToUTF8(env, virtual_url_for_data_url));
    797   }
    798 
    799   params.can_load_local_resources = can_load_local_resources;
    800 
    801   LoadUrl(params);
    802 }
    803 
    804 jint ContentViewCoreImpl::GetCurrentRenderProcessId(JNIEnv* env, jobject obj) {
    805   return GetRenderProcessIdFromRenderViewHost(
    806       web_contents_->GetRenderViewHost());
    807 }
    808 
    809 ScopedJavaLocalRef<jstring> ContentViewCoreImpl::GetURL(
    810     JNIEnv* env, jobject) const {
    811   // The current users of the Java API expect to use the active entry
    812   // rather than the visible entry, which is exposed by WebContents::GetURL.
    813   content::NavigationEntry* entry =
    814       web_contents_->GetController().GetActiveEntry();
    815   GURL url = entry ? entry->GetVirtualURL() : GURL::EmptyGURL();
    816   return ConvertUTF8ToJavaString(env, url.spec());
    817 }
    818 
    819 ScopedJavaLocalRef<jstring> ContentViewCoreImpl::GetTitle(
    820     JNIEnv* env, jobject obj) const {
    821   return ConvertUTF16ToJavaString(env, GetWebContents()->GetTitle());
    822 }
    823 
    824 jboolean ContentViewCoreImpl::IsIncognito(JNIEnv* env, jobject obj) {
    825   return GetWebContents()->GetBrowserContext()->IsOffTheRecord();
    826 }
    827 
    828 WebContents* ContentViewCoreImpl::GetWebContents() const {
    829   return web_contents_;
    830 }
    831 
    832 void ContentViewCoreImpl::SetFocus(JNIEnv* env, jobject obj, jboolean focused) {
    833   SetFocusInternal(focused);
    834 }
    835 
    836 void ContentViewCoreImpl::SetFocusInternal(bool focused) {
    837   if (!GetRenderWidgetHostViewAndroid())
    838     return;
    839 
    840   if (focused)
    841     GetRenderWidgetHostViewAndroid()->Focus();
    842   else
    843     GetRenderWidgetHostViewAndroid()->Blur();
    844 }
    845 
    846 void ContentViewCoreImpl::SendOrientationChangeEvent(JNIEnv* env,
    847                                                      jobject obj,
    848                                                      jint orientation) {
    849   RenderWidgetHostViewAndroid* rwhv = GetRenderWidgetHostViewAndroid();
    850   if (rwhv)
    851     rwhv->UpdateScreenInfo(rwhv->GetNativeView());
    852 
    853   RenderViewHostImpl* rvhi = static_cast<RenderViewHostImpl*>(
    854       web_contents_->GetRenderViewHost());
    855   rvhi->SendOrientationChangeEvent(orientation);
    856 }
    857 
    858 jboolean ContentViewCoreImpl::SendTouchEvent(JNIEnv* env,
    859                                              jobject obj,
    860                                              jlong time_ms,
    861                                              jint type,
    862                                              jobjectArray pts) {
    863   RenderWidgetHostViewAndroid* rwhv = GetRenderWidgetHostViewAndroid();
    864   if (rwhv) {
    865     using WebKit::WebTouchEvent;
    866     WebKit::WebTouchEvent event;
    867     TouchPoint::BuildWebTouchEvent(env, type, time_ms, GetDpiScale(), pts,
    868         event);
    869     rwhv->SendTouchEvent(event);
    870     return true;
    871   }
    872   return false;
    873 }
    874 
    875 float ContentViewCoreImpl::GetTouchPaddingDip() {
    876   return 48.0f / GetDpiScale();
    877 }
    878 
    879 float ContentViewCoreImpl::GetDpiScale() const {
    880   return dpi_scale_;
    881 }
    882 
    883 void ContentViewCoreImpl::RequestContentClipping(
    884     const gfx::Rect& clipping,
    885     const gfx::Size& content_size) {
    886   RenderWidgetHostViewAndroid* rwhv = GetRenderWidgetHostViewAndroid();
    887   if (rwhv)
    888     rwhv->RequestContentClipping(clipping, content_size);
    889 }
    890 
    891 jboolean ContentViewCoreImpl::SendMouseMoveEvent(JNIEnv* env,
    892                                                  jobject obj,
    893                                                  jlong time_ms,
    894                                                  jfloat x,
    895                                                  jfloat y) {
    896   RenderWidgetHostViewAndroid* rwhv = GetRenderWidgetHostViewAndroid();
    897   if (!rwhv)
    898     return false;
    899 
    900   WebKit::WebMouseEvent event = WebMouseEventBuilder::Build(
    901       WebInputEvent::MouseMove,
    902       WebKit::WebMouseEvent::ButtonNone,
    903       time_ms / 1000.0, x / GetDpiScale(), y / GetDpiScale(), 0, 1);
    904 
    905   rwhv->SendMouseEvent(event);
    906   return true;
    907 }
    908 
    909 jboolean ContentViewCoreImpl::SendMouseWheelEvent(JNIEnv* env,
    910                                                   jobject obj,
    911                                                   jlong time_ms,
    912                                                   jfloat x,
    913                                                   jfloat y,
    914                                                   jfloat vertical_axis) {
    915   RenderWidgetHostViewAndroid* rwhv = GetRenderWidgetHostViewAndroid();
    916   if (!rwhv)
    917     return false;
    918 
    919   WebMouseWheelEventBuilder::Direction direction;
    920   if (vertical_axis > 0) {
    921     direction = WebMouseWheelEventBuilder::DIRECTION_UP;
    922   } else if (vertical_axis < 0) {
    923     direction = WebMouseWheelEventBuilder::DIRECTION_DOWN;
    924   } else {
    925     return false;
    926   }
    927   WebKit::WebMouseWheelEvent event = WebMouseWheelEventBuilder::Build(
    928       direction, time_ms / 1000.0, x / GetDpiScale(), y / GetDpiScale());
    929 
    930   rwhv->SendMouseWheelEvent(event);
    931   return true;
    932 }
    933 
    934 WebGestureEvent ContentViewCoreImpl::MakeGestureEvent(
    935     WebInputEvent::Type type, long time_ms, float x, float y) const {
    936   return WebGestureEventBuilder::Build(
    937       type, time_ms / 1000.0, x / GetDpiScale(), y / GetDpiScale());
    938 }
    939 
    940 void ContentViewCoreImpl::SendGestureEvent(
    941     const WebKit::WebGestureEvent& event) {
    942   RenderWidgetHostViewAndroid* rwhv = GetRenderWidgetHostViewAndroid();
    943   if (rwhv)
    944     rwhv->SendGestureEvent(event);
    945 }
    946 
    947 void ContentViewCoreImpl::UpdateTabCrashedFlag() {
    948   // Since RenderWidgetHostView is associated with the lifetime of the renderer
    949   // process, we use it to test whether there is a renderer process.
    950   tab_crashed_ = !(web_contents_->GetRenderWidgetHostView());
    951 }
    952 
    953 void ContentViewCoreImpl::ScrollBegin(JNIEnv* env, jobject obj, jlong time_ms,
    954                                       jfloat x, jfloat y) {
    955   WebGestureEvent event = MakeGestureEvent(
    956       WebInputEvent::GestureScrollBegin, time_ms, x, y);
    957   SendGestureEvent(event);
    958 }
    959 
    960 void ContentViewCoreImpl::ScrollEnd(JNIEnv* env, jobject obj, jlong time_ms) {
    961   WebGestureEvent event = MakeGestureEvent(
    962       WebInputEvent::GestureScrollEnd, time_ms, 0, 0);
    963   SendGestureEvent(event);
    964 }
    965 
    966 void ContentViewCoreImpl::ScrollBy(JNIEnv* env, jobject obj, jlong time_ms,
    967                                    jfloat x, jfloat y, jfloat dx, jfloat dy,
    968                                    jboolean last_input_event_for_vsync) {
    969   WebGestureEvent event = MakeGestureEvent(
    970       WebInputEvent::GestureScrollUpdate, time_ms, x, y);
    971   event.data.scrollUpdate.deltaX = -dx / GetDpiScale();
    972   event.data.scrollUpdate.deltaY = -dy / GetDpiScale();
    973 
    974   SendGestureEvent(event);
    975 
    976   // TODO(brianderson): Clean up last_input_event_for_vsync. crbug.com/247043
    977   if (last_input_event_for_vsync) {
    978     SendBeginFrame(base::TimeTicks() +
    979                    base::TimeDelta::FromMilliseconds(time_ms));
    980   }
    981 }
    982 
    983 void ContentViewCoreImpl::FlingStart(JNIEnv* env, jobject obj, jlong time_ms,
    984                                      jfloat x, jfloat y, jfloat vx, jfloat vy) {
    985   WebGestureEvent event = MakeGestureEvent(
    986       WebInputEvent::GestureFlingStart, time_ms, x, y);
    987 
    988   // Velocity should not be scaled by DIP since that interacts poorly with the
    989   // deceleration constants.  The DIP scaling is done on the renderer.
    990   event.data.flingStart.velocityX = vx;
    991   event.data.flingStart.velocityY = vy;
    992 
    993   SendGestureEvent(event);
    994 }
    995 
    996 void ContentViewCoreImpl::FlingCancel(JNIEnv* env, jobject obj, jlong time_ms) {
    997   WebGestureEvent event = MakeGestureEvent(
    998       WebInputEvent::GestureFlingCancel, time_ms, 0, 0);
    999   SendGestureEvent(event);
   1000 }
   1001 
   1002 void ContentViewCoreImpl::SingleTap(JNIEnv* env, jobject obj, jlong time_ms,
   1003                                     jfloat x, jfloat y,
   1004                                     jboolean disambiguation_popup_tap) {
   1005   WebGestureEvent event = MakeGestureEvent(
   1006       WebInputEvent::GestureTap, time_ms, x, y);
   1007 
   1008   event.data.tap.tapCount = 1;
   1009   if (!disambiguation_popup_tap) {
   1010     const float touch_padding_dip = GetTouchPaddingDip();
   1011     event.data.tap.width = touch_padding_dip;
   1012     event.data.tap.height = touch_padding_dip;
   1013   }
   1014 
   1015   SendGestureEvent(event);
   1016 }
   1017 
   1018 void ContentViewCoreImpl::SingleTapUnconfirmed(JNIEnv* env, jobject obj,
   1019                                                jlong time_ms,
   1020                                                jfloat x, jfloat y) {
   1021   WebGestureEvent event = MakeGestureEvent(
   1022       WebInputEvent::GestureTapUnconfirmed, time_ms, x, y);
   1023 
   1024   event.data.tap.tapCount = 1;
   1025 
   1026   const float touch_padding_dip = GetTouchPaddingDip();
   1027   event.data.tap.width = touch_padding_dip;
   1028   event.data.tap.height = touch_padding_dip;
   1029 
   1030   SendGestureEvent(event);
   1031 }
   1032 
   1033 void ContentViewCoreImpl::ShowPressState(JNIEnv* env, jobject obj,
   1034                                          jlong time_ms,
   1035                                          jfloat x, jfloat y) {
   1036   WebGestureEvent event = MakeGestureEvent(
   1037       WebInputEvent::GestureTapDown, time_ms, x, y);
   1038   SendGestureEvent(event);
   1039 }
   1040 
   1041 void ContentViewCoreImpl::ShowPressCancel(JNIEnv* env,
   1042                                           jobject obj,
   1043                                           jlong time_ms,
   1044                                           jfloat x,
   1045                                           jfloat y) {
   1046   WebGestureEvent event = MakeGestureEvent(
   1047       WebInputEvent::GestureTapCancel, time_ms, x, y);
   1048   SendGestureEvent(event);
   1049 }
   1050 
   1051 void ContentViewCoreImpl::DoubleTap(JNIEnv* env, jobject obj, jlong time_ms,
   1052                                     jfloat x, jfloat y) {
   1053   WebGestureEvent event = MakeGestureEvent(
   1054       WebInputEvent::GestureDoubleTap, time_ms, x, y);
   1055   SendGestureEvent(event);
   1056 }
   1057 
   1058 void ContentViewCoreImpl::LongPress(JNIEnv* env, jobject obj, jlong time_ms,
   1059                                     jfloat x, jfloat y,
   1060                                     jboolean disambiguation_popup_tap) {
   1061   WebGestureEvent event = MakeGestureEvent(
   1062       WebInputEvent::GestureLongPress, time_ms, x, y);
   1063 
   1064   if (!disambiguation_popup_tap) {
   1065     const float touch_padding_dip = GetTouchPaddingDip();
   1066     event.data.longPress.width = touch_padding_dip;
   1067     event.data.longPress.height = touch_padding_dip;
   1068   }
   1069 
   1070   SendGestureEvent(event);
   1071 }
   1072 
   1073 void ContentViewCoreImpl::LongTap(JNIEnv* env, jobject obj, jlong time_ms,
   1074                                   jfloat x, jfloat y,
   1075                                   jboolean disambiguation_popup_tap) {
   1076   WebGestureEvent event = MakeGestureEvent(
   1077       WebInputEvent::GestureLongTap, time_ms, x, y);
   1078 
   1079   if (!disambiguation_popup_tap) {
   1080     const float touch_padding_dip = GetTouchPaddingDip();
   1081     event.data.longPress.width = touch_padding_dip;
   1082     event.data.longPress.height = touch_padding_dip;
   1083   }
   1084 
   1085   SendGestureEvent(event);
   1086 }
   1087 
   1088 void ContentViewCoreImpl::PinchBegin(JNIEnv* env, jobject obj, jlong time_ms,
   1089                                      jfloat x, jfloat y) {
   1090   WebGestureEvent event = MakeGestureEvent(
   1091       WebInputEvent::GesturePinchBegin, time_ms, x, y);
   1092   SendGestureEvent(event);
   1093 }
   1094 
   1095 void ContentViewCoreImpl::PinchEnd(JNIEnv* env, jobject obj, jlong time_ms) {
   1096   WebGestureEvent event = MakeGestureEvent(
   1097       WebInputEvent::GesturePinchEnd, time_ms, 0, 0);
   1098   SendGestureEvent(event);
   1099 }
   1100 
   1101 void ContentViewCoreImpl::PinchBy(JNIEnv* env, jobject obj, jlong time_ms,
   1102                                   jfloat anchor_x, jfloat anchor_y,
   1103                                   jfloat delta,
   1104                                   jboolean last_input_event_for_vsync) {
   1105   WebGestureEvent event = MakeGestureEvent(
   1106       WebInputEvent::GesturePinchUpdate, time_ms, anchor_x, anchor_y);
   1107   event.data.pinchUpdate.scale = delta;
   1108 
   1109   SendGestureEvent(event);
   1110 
   1111   // TODO(brianderson): Clean up last_input_event_for_vsync. crbug.com/247043
   1112   if (last_input_event_for_vsync) {
   1113     SendBeginFrame(base::TimeTicks() +
   1114                    base::TimeDelta::FromMilliseconds(time_ms));
   1115   }
   1116 }
   1117 
   1118 void ContentViewCoreImpl::SelectBetweenCoordinates(JNIEnv* env, jobject obj,
   1119                                                    jfloat x1, jfloat y1,
   1120                                                    jfloat x2, jfloat y2) {
   1121   if (GetRenderWidgetHostViewAndroid()) {
   1122     GetRenderWidgetHostViewAndroid()->SelectRange(
   1123         gfx::Point(x1 / GetDpiScale(), y1 / GetDpiScale()),
   1124         gfx::Point(x2 / GetDpiScale(), y2 / GetDpiScale()));
   1125   }
   1126 }
   1127 
   1128 void ContentViewCoreImpl::MoveCaret(JNIEnv* env, jobject obj,
   1129                                     jfloat x, jfloat y) {
   1130   if (GetRenderWidgetHostViewAndroid()) {
   1131     GetRenderWidgetHostViewAndroid()->MoveCaret(
   1132         gfx::Point(x / GetDpiScale(), y / GetDpiScale()));
   1133   }
   1134 }
   1135 
   1136 jboolean ContentViewCoreImpl::CanGoBack(JNIEnv* env, jobject obj) {
   1137   return web_contents_->GetController().CanGoBack();
   1138 }
   1139 
   1140 jboolean ContentViewCoreImpl::CanGoForward(JNIEnv* env, jobject obj) {
   1141   return web_contents_->GetController().CanGoForward();
   1142 }
   1143 
   1144 jboolean ContentViewCoreImpl::CanGoToOffset(JNIEnv* env, jobject obj,
   1145                                             jint offset) {
   1146   return web_contents_->GetController().CanGoToOffset(offset);
   1147 }
   1148 
   1149 void ContentViewCoreImpl::GoBack(JNIEnv* env, jobject obj) {
   1150   web_contents_->GetController().GoBack();
   1151   UpdateTabCrashedFlag();
   1152 }
   1153 
   1154 void ContentViewCoreImpl::GoForward(JNIEnv* env, jobject obj) {
   1155   web_contents_->GetController().GoForward();
   1156   UpdateTabCrashedFlag();
   1157 }
   1158 
   1159 void ContentViewCoreImpl::GoToOffset(JNIEnv* env, jobject obj, jint offset) {
   1160   web_contents_->GetController().GoToOffset(offset);
   1161   UpdateTabCrashedFlag();
   1162 }
   1163 
   1164 void ContentViewCoreImpl::GoToNavigationIndex(JNIEnv* env,
   1165                                               jobject obj,
   1166                                               jint index) {
   1167   web_contents_->GetController().GoToIndex(index);
   1168   UpdateTabCrashedFlag();
   1169 }
   1170 
   1171 void ContentViewCoreImpl::StopLoading(JNIEnv* env, jobject obj) {
   1172   web_contents_->Stop();
   1173 }
   1174 
   1175 void ContentViewCoreImpl::Reload(JNIEnv* env, jobject obj) {
   1176   // Set check_for_repost parameter to false as we have no repost confirmation
   1177   // dialog ("confirm form resubmission" screen will still appear, however).
   1178   if (web_contents_->GetController().NeedsReload())
   1179     web_contents_->GetController().LoadIfNecessary();
   1180   else
   1181     web_contents_->GetController().Reload(true);
   1182   UpdateTabCrashedFlag();
   1183 }
   1184 
   1185 void ContentViewCoreImpl::CancelPendingReload(JNIEnv* env, jobject obj) {
   1186   web_contents_->GetController().CancelPendingReload();
   1187 }
   1188 
   1189 void ContentViewCoreImpl::ContinuePendingReload(JNIEnv* env, jobject obj) {
   1190   web_contents_->GetController().ContinuePendingReload();
   1191 }
   1192 
   1193 void ContentViewCoreImpl::ClearHistory(JNIEnv* env, jobject obj) {
   1194   // TODO(creis): Do callers of this need to know if it fails?
   1195   if (web_contents_->GetController().CanPruneAllButVisible())
   1196     web_contents_->GetController().PruneAllButVisible();
   1197 }
   1198 
   1199 void ContentViewCoreImpl::AddJavascriptInterface(
   1200     JNIEnv* env,
   1201     jobject /* obj */,
   1202     jobject object,
   1203     jstring name,
   1204     jclass safe_annotation_clazz,
   1205     jobject retained_object_set) {
   1206   ScopedJavaLocalRef<jobject> scoped_object(env, object);
   1207   ScopedJavaLocalRef<jclass> scoped_clazz(env, safe_annotation_clazz);
   1208   JavaObjectWeakGlobalRef weak_retained_object_set(env, retained_object_set);
   1209 
   1210   // JavaBoundObject creates the NPObject with a ref count of 1, and
   1211   // JavaBridgeDispatcherHostManager takes its own ref.
   1212   JavaBridgeDispatcherHostManager* java_bridge =
   1213       web_contents_->java_bridge_dispatcher_host_manager();
   1214   java_bridge->SetRetainedObjectSet(weak_retained_object_set);
   1215   NPObject* bound_object = JavaBoundObject::Create(scoped_object, scoped_clazz,
   1216                                                    java_bridge->AsWeakPtr());
   1217   java_bridge->AddNamedObject(ConvertJavaStringToUTF16(env, name),
   1218                               bound_object);
   1219   WebKit::WebBindings::releaseObject(bound_object);
   1220 }
   1221 
   1222 void ContentViewCoreImpl::RemoveJavascriptInterface(JNIEnv* env,
   1223                                                     jobject /* obj */,
   1224                                                     jstring name) {
   1225   web_contents_->java_bridge_dispatcher_host_manager()->RemoveNamedObject(
   1226       ConvertJavaStringToUTF16(env, name));
   1227 }
   1228 
   1229 void ContentViewCoreImpl::UpdateVSyncParameters(JNIEnv* env, jobject /* obj */,
   1230                                                 jlong timebase_micros,
   1231                                                 jlong interval_micros) {
   1232   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
   1233   if (!view)
   1234     return;
   1235 
   1236   RenderWidgetHostImpl* host = RenderWidgetHostImpl::From(
   1237       view->GetRenderWidgetHost());
   1238 
   1239   host->UpdateVSyncParameters(
   1240       base::TimeTicks::FromInternalValue(timebase_micros),
   1241       base::TimeDelta::FromMicroseconds(interval_micros));
   1242 
   1243   vsync_interval_ =
   1244       base::TimeDelta::FromMicroseconds(interval_micros);
   1245   expected_browser_composite_time_ =
   1246       vsync_interval_ * kDefaultBrowserCompositeVSyncFraction;
   1247 }
   1248 
   1249 void ContentViewCoreImpl::OnVSync(JNIEnv* env, jobject /* obj */,
   1250                                   jlong frame_time_micros) {
   1251   base::TimeTicks frame_time =
   1252       base::TimeTicks::FromInternalValue(frame_time_micros);
   1253   SendBeginFrame(frame_time);
   1254 }
   1255 
   1256 void ContentViewCoreImpl::SendBeginFrame(base::TimeTicks frame_time) {
   1257   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
   1258   if (!view)
   1259     return;
   1260 
   1261   base::TimeTicks display_time = frame_time + vsync_interval_;
   1262   base::TimeTicks deadline = display_time - expected_browser_composite_time_;
   1263 
   1264   view->SendBeginFrame(
   1265       cc::BeginFrameArgs::Create(frame_time, deadline, vsync_interval_));
   1266 }
   1267 
   1268 jboolean ContentViewCoreImpl::OnAnimate(JNIEnv* env, jobject /* obj */,
   1269                                         jlong frame_time_micros) {
   1270   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
   1271   if (!view)
   1272     return false;
   1273 
   1274   return view->Animate(base::TimeTicks::FromInternalValue(frame_time_micros));
   1275 }
   1276 
   1277 jboolean ContentViewCoreImpl::PopulateBitmapFromCompositor(JNIEnv* env,
   1278                                                            jobject obj,
   1279                                                            jobject jbitmap) {
   1280   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
   1281   if (!view)
   1282     return false;
   1283 
   1284   return view->PopulateBitmapWithContents(jbitmap);
   1285 }
   1286 
   1287 void ContentViewCoreImpl::WasResized(JNIEnv* env, jobject obj) {
   1288   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
   1289   if (view)
   1290     view->WasResized();
   1291 }
   1292 
   1293 void ContentViewCoreImpl::ShowInterstitialPage(
   1294     JNIEnv* env, jobject obj, jstring jurl, jint delegate_ptr) {
   1295   GURL url(base::android::ConvertJavaStringToUTF8(env, jurl));
   1296   InterstitialPageDelegateAndroid* delegate =
   1297       reinterpret_cast<InterstitialPageDelegateAndroid*>(delegate_ptr);
   1298   InterstitialPage* interstitial = InterstitialPage::Create(
   1299       web_contents_, false, url, delegate);
   1300   delegate->set_interstitial_page(interstitial);
   1301   interstitial->Show();
   1302 }
   1303 
   1304 jboolean ContentViewCoreImpl::IsShowingInterstitialPage(JNIEnv* env,
   1305                                                         jobject obj) {
   1306   return web_contents_->ShowingInterstitialPage();
   1307 }
   1308 
   1309 void ContentViewCoreImpl::AttachExternalVideoSurface(JNIEnv* env,
   1310                                                      jobject obj,
   1311                                                      jint player_id,
   1312                                                      jobject jsurface) {
   1313 #if defined(GOOGLE_TV)
   1314   RenderViewHostImpl* rvhi = static_cast<RenderViewHostImpl*>(
   1315       web_contents_->GetRenderViewHost());
   1316   BrowserMediaPlayerManager* browser_media_player_manager =
   1317       rvhi ? static_cast<BrowserMediaPlayerManager*>(
   1318                  rvhi->media_player_manager())
   1319            : NULL;
   1320   if (browser_media_player_manager) {
   1321     browser_media_player_manager->AttachExternalVideoSurface(
   1322         static_cast<int>(player_id), jsurface);
   1323   }
   1324 #endif
   1325 }
   1326 
   1327 void ContentViewCoreImpl::DetachExternalVideoSurface(JNIEnv* env,
   1328                                                      jobject obj,
   1329                                                      jint player_id) {
   1330 #if defined(GOOGLE_TV)
   1331   RenderViewHostImpl* rvhi = static_cast<RenderViewHostImpl*>(
   1332       web_contents_->GetRenderViewHost());
   1333   BrowserMediaPlayerManager* browser_media_player_manager =
   1334       rvhi ? static_cast<BrowserMediaPlayerManager*>(
   1335                  rvhi->media_player_manager())
   1336            : NULL;
   1337   if (browser_media_player_manager) {
   1338     browser_media_player_manager->DetachExternalVideoSurface(
   1339         static_cast<int>(player_id));
   1340   }
   1341 #endif
   1342 }
   1343 
   1344 jboolean ContentViewCoreImpl::IsRenderWidgetHostViewReady(JNIEnv* env,
   1345                                                           jobject obj) {
   1346   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
   1347   return view && view->HasValidFrame();
   1348 }
   1349 
   1350 void ContentViewCoreImpl::ExitFullscreen(JNIEnv* env, jobject obj) {
   1351   RenderViewHost* host = web_contents_->GetRenderViewHost();
   1352   host->ExitFullscreen();
   1353 }
   1354 
   1355 void ContentViewCoreImpl::UpdateTopControlsState(JNIEnv* env,
   1356                                                  jobject obj,
   1357                                                  bool enable_hiding,
   1358                                                  bool enable_showing,
   1359                                                  bool animate) {
   1360   RenderViewHost* host = web_contents_->GetRenderViewHost();
   1361   host->Send(new ViewMsg_UpdateTopControlsState(host->GetRoutingID(),
   1362                                                 enable_hiding,
   1363                                                 enable_showing,
   1364                                                 animate));
   1365 }
   1366 
   1367 void ContentViewCoreImpl::ShowImeIfNeeded(JNIEnv* env, jobject obj) {
   1368   RenderViewHost* host = web_contents_->GetRenderViewHost();
   1369   host->Send(new ViewMsg_ShowImeIfNeeded(host->GetRoutingID()));
   1370 }
   1371 
   1372 void ContentViewCoreImpl::ScrollFocusedEditableNodeIntoView(JNIEnv* env,
   1373                                                             jobject obj) {
   1374   RenderViewHost* host = web_contents_->GetRenderViewHost();
   1375   host->Send(new InputMsg_ScrollFocusedEditableNodeIntoRect(
   1376       host->GetRoutingID(), gfx::Rect()));
   1377 }
   1378 
   1379 namespace {
   1380 
   1381 static void AddNavigationEntryToHistory(JNIEnv* env, jobject obj,
   1382                                         jobject history,
   1383                                         NavigationEntry* entry,
   1384                                         int index) {
   1385   // Get the details of the current entry
   1386   ScopedJavaLocalRef<jstring> j_url(
   1387       ConvertUTF8ToJavaString(env, entry->GetURL().spec()));
   1388   ScopedJavaLocalRef<jstring> j_virtual_url(
   1389       ConvertUTF8ToJavaString(env, entry->GetVirtualURL().spec()));
   1390   ScopedJavaLocalRef<jstring> j_original_url(
   1391       ConvertUTF8ToJavaString(env, entry->GetOriginalRequestURL().spec()));
   1392   ScopedJavaLocalRef<jstring> j_title(
   1393       ConvertUTF16ToJavaString(env, entry->GetTitle()));
   1394   ScopedJavaLocalRef<jobject> j_bitmap;
   1395   const FaviconStatus& status = entry->GetFavicon();
   1396   if (status.valid && status.image.ToSkBitmap()->getSize() > 0)
   1397     j_bitmap = gfx::ConvertToJavaBitmap(status.image.ToSkBitmap());
   1398 
   1399   // Add the item to the list
   1400   Java_ContentViewCore_addToNavigationHistory(
   1401       env, obj, history, index, j_url.obj(), j_virtual_url.obj(),
   1402       j_original_url.obj(), j_title.obj(), j_bitmap.obj());
   1403 }
   1404 
   1405 }  // namespace
   1406 
   1407 int ContentViewCoreImpl::GetNavigationHistory(JNIEnv* env,
   1408                                               jobject obj,
   1409                                               jobject history) {
   1410   // Iterate through navigation entries to populate the list
   1411   const NavigationController& controller = web_contents_->GetController();
   1412   int count = controller.GetEntryCount();
   1413   for (int i = 0; i < count; ++i) {
   1414     AddNavigationEntryToHistory(
   1415         env, obj, history, controller.GetEntryAtIndex(i), i);
   1416   }
   1417 
   1418   return controller.GetCurrentEntryIndex();
   1419 }
   1420 
   1421 void ContentViewCoreImpl::GetDirectedNavigationHistory(JNIEnv* env,
   1422                                                        jobject obj,
   1423                                                        jobject history,
   1424                                                        jboolean is_forward,
   1425                                                        jint max_entries) {
   1426   // Iterate through navigation entries to populate the list
   1427   const NavigationController& controller = web_contents_->GetController();
   1428   int count = controller.GetEntryCount();
   1429   int num_added = 0;
   1430   int increment_value = is_forward ? 1 : -1;
   1431   for (int i = controller.GetCurrentEntryIndex() + increment_value;
   1432        i >= 0 && i < count;
   1433        i += increment_value) {
   1434     if (num_added >= max_entries)
   1435       break;
   1436 
   1437     AddNavigationEntryToHistory(
   1438         env, obj, history, controller.GetEntryAtIndex(i), i);
   1439     num_added++;
   1440   }
   1441 }
   1442 
   1443 ScopedJavaLocalRef<jstring>
   1444 ContentViewCoreImpl::GetOriginalUrlForActiveNavigationEntry(JNIEnv* env,
   1445                                                             jobject obj) {
   1446   NavigationEntry* entry = web_contents_->GetController().GetActiveEntry();
   1447   if (entry == NULL)
   1448     return ScopedJavaLocalRef<jstring>(env, NULL);
   1449   return ConvertUTF8ToJavaString(env, entry->GetOriginalRequestURL().spec());
   1450 }
   1451 
   1452 int ContentViewCoreImpl::GetNativeImeAdapter(JNIEnv* env, jobject obj) {
   1453   RenderWidgetHostViewAndroid* rwhva = GetRenderWidgetHostViewAndroid();
   1454   if (!rwhva)
   1455     return 0;
   1456   return rwhva->GetNativeImeAdapter();
   1457 }
   1458 
   1459 jboolean ContentViewCoreImpl::NeedsReload(JNIEnv* env, jobject obj) {
   1460   return web_contents_->GetController().NeedsReload();
   1461 }
   1462 
   1463 void ContentViewCoreImpl::UndoScrollFocusedEditableNodeIntoView(
   1464     JNIEnv* env,
   1465     jobject obj) {
   1466   RenderViewHost* host = web_contents_->GetRenderViewHost();
   1467   host->Send(
   1468       new ViewMsg_UndoScrollFocusedEditableNodeIntoView(host->GetRoutingID()));
   1469 }
   1470 
   1471 namespace {
   1472 void JavaScriptResultCallback(const ScopedJavaGlobalRef<jobject>& callback,
   1473                               const base::Value* result) {
   1474   JNIEnv* env = base::android::AttachCurrentThread();
   1475   std::string json;
   1476   base::JSONWriter::Write(result, &json);
   1477   ScopedJavaLocalRef<jstring> j_json = ConvertUTF8ToJavaString(env, json);
   1478   Java_ContentViewCore_onEvaluateJavaScriptResult(env,
   1479                                                   j_json.obj(),
   1480                                                   callback.obj());
   1481 }
   1482 }  // namespace
   1483 
   1484 void ContentViewCoreImpl::EvaluateJavaScript(JNIEnv* env,
   1485                                              jobject obj,
   1486                                              jstring script,
   1487                                              jobject callback,
   1488                                              jboolean start_renderer) {
   1489   RenderViewHost* rvh = web_contents_->GetRenderViewHost();
   1490   DCHECK(rvh);
   1491 
   1492   if (start_renderer && !rvh->IsRenderViewLive()) {
   1493     if (!web_contents_->CreateRenderViewForInitialEmptyDocument()) {
   1494       LOG(ERROR) << "Failed to create RenderView in EvaluateJavaScript";
   1495       return;
   1496     }
   1497   }
   1498 
   1499   if (!callback) {
   1500     // No callback requested.
   1501     rvh->ExecuteJavascriptInWebFrame(string16(),  // frame_xpath
   1502                                      ConvertJavaStringToUTF16(env, script));
   1503     return;
   1504   }
   1505 
   1506   // Secure the Java callback in a scoped object and give ownership of it to the
   1507   // base::Callback.
   1508   ScopedJavaGlobalRef<jobject> j_callback;
   1509   j_callback.Reset(env, callback);
   1510   content::RenderViewHost::JavascriptResultCallback c_callback =
   1511       base::Bind(&JavaScriptResultCallback, j_callback);
   1512 
   1513   rvh->ExecuteJavascriptInWebFrameCallbackResult(
   1514       string16(),  // frame_xpath
   1515       ConvertJavaStringToUTF16(env, script),
   1516       c_callback);
   1517 }
   1518 
   1519 bool ContentViewCoreImpl::GetUseDesktopUserAgent(
   1520     JNIEnv* env, jobject obj) {
   1521   NavigationEntry* entry = web_contents_->GetController().GetActiveEntry();
   1522   return entry && entry->GetIsOverridingUserAgent();
   1523 }
   1524 
   1525 void ContentViewCoreImpl::UpdateImeAdapter(int native_ime_adapter,
   1526                                            int text_input_type,
   1527                                            const std::string& text,
   1528                                            int selection_start,
   1529                                            int selection_end,
   1530                                            int composition_start,
   1531                                            int composition_end,
   1532                                            bool show_ime_if_needed) {
   1533   JNIEnv* env = AttachCurrentThread();
   1534   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   1535   if (obj.is_null())
   1536     return;
   1537 
   1538   ScopedJavaLocalRef<jstring> jstring_text = ConvertUTF8ToJavaString(env, text);
   1539   Java_ContentViewCore_updateImeAdapter(env, obj.obj(),
   1540                                         native_ime_adapter, text_input_type,
   1541                                         jstring_text.obj(),
   1542                                         selection_start, selection_end,
   1543                                         composition_start, composition_end,
   1544                                         show_ime_if_needed);
   1545 }
   1546 
   1547 void ContentViewCoreImpl::ProcessImeBatchStateAck(bool is_begin) {
   1548   JNIEnv* env = AttachCurrentThread();
   1549   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   1550   if (obj.is_null())
   1551     return;
   1552   Java_ContentViewCore_processImeBatchStateAck(env, obj.obj(), is_begin);
   1553 }
   1554 
   1555 void ContentViewCoreImpl::ClearSslPreferences(JNIEnv* env, jobject obj) {
   1556   SSLHostState* state = SSLHostState::GetFor(
   1557       web_contents_->GetController().GetBrowserContext());
   1558   state->Clear();
   1559 }
   1560 
   1561 void ContentViewCoreImpl::SetUseDesktopUserAgent(
   1562     JNIEnv* env,
   1563     jobject obj,
   1564     jboolean enabled,
   1565     jboolean reload_on_state_change) {
   1566   if (GetUseDesktopUserAgent(env, obj) == enabled)
   1567     return;
   1568 
   1569   // Make sure the navigation entry actually exists.
   1570   NavigationEntry* entry = web_contents_->GetController().GetActiveEntry();
   1571   if (!entry)
   1572     return;
   1573 
   1574   // Set the flag in the NavigationEntry.
   1575   entry->SetIsOverridingUserAgent(enabled);
   1576 
   1577   // Send the override to the renderer.
   1578   if (reload_on_state_change) {
   1579     // Reloading the page will send the override down as part of the
   1580     // navigation IPC message.
   1581     NavigationControllerImpl& controller =
   1582         static_cast<NavigationControllerImpl&>(web_contents_->GetController());
   1583     controller.ReloadOriginalRequestURL(false);
   1584   }
   1585 }
   1586 
   1587 void ContentViewCoreImpl::SetAccessibilityEnabled(JNIEnv* env, jobject obj,
   1588                                                   bool enabled) {
   1589   RenderWidgetHostViewAndroid* host_view = GetRenderWidgetHostViewAndroid();
   1590   if (!host_view)
   1591     return;
   1592   RenderWidgetHostImpl* host_impl = RenderWidgetHostImpl::From(
   1593       host_view->GetRenderWidgetHost());
   1594   BrowserAccessibilityState* accessibility_state =
   1595       BrowserAccessibilityState::GetInstance();
   1596   if (enabled) {
   1597     // This enables accessibility globally unless it was explicitly disallowed
   1598     // by a command-line flag.
   1599     accessibility_state->OnScreenReaderDetected();
   1600     // If it was actually enabled globally, enable it for this RenderWidget now.
   1601     if (accessibility_state->IsAccessibleBrowser() && host_impl)
   1602       host_impl->SetAccessibilityMode(AccessibilityModeComplete);
   1603   } else {
   1604     accessibility_state->DisableAccessibility();
   1605     if (host_impl)
   1606       host_impl->SetAccessibilityMode(AccessibilityModeOff);
   1607   }
   1608 }
   1609 
   1610 // This is called for each ContentView.
   1611 jint Init(JNIEnv* env, jobject obj,
   1612           jboolean hardware_accelerated,
   1613           jint native_web_contents,
   1614           jint view_android,
   1615           jint window_android) {
   1616   ContentViewCoreImpl* view = new ContentViewCoreImpl(
   1617       env, obj, hardware_accelerated,
   1618       reinterpret_cast<WebContents*>(native_web_contents),
   1619       reinterpret_cast<ui::ViewAndroid*>(view_android),
   1620       reinterpret_cast<ui::WindowAndroid*>(window_android));
   1621   return reinterpret_cast<jint>(view);
   1622 }
   1623 
   1624 bool RegisterContentViewCore(JNIEnv* env) {
   1625   return RegisterNativesImpl(env);
   1626 }
   1627 
   1628 }  // namespace content
   1629