cc: Emulate BeginFrame in OutputSurfaces that don't support it natively

content/browser/renderer_host/render_widget_host_view_android.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 390 matching lines @@
   if (cached_background_color_ == color)
     return;
 
   cached_background_color_ = color;
   if (content_view_core_)
     content_view_core_->OnBackgroundColorChanged(color);
 }
 
 void RenderWidgetHostViewAndroid::SendBeginFrame(
     base::TimeTicks frame_time) {
+  TRACE_EVENT0("cc", "RenderWidgetHostViewAndroid::SendBeginFrame");
   if (host_)
     host_->Send(new ViewMsg_BeginFrame(host_->GetRoutingID(),
                                        frame_time));
 }
 
 void RenderWidgetHostViewAndroid::OnSetNeedsBeginFrame(
     bool enabled) {
+  TRACE_EVENT1("cc", "RenderWidgetHostViewAndroid::OnSetNeedsBeginFrame",
+               "enabled", enabled);
   if (content_view_core_)
     content_view_core_->SetVSyncNotificationEnabled(enabled);
 }
 
 void RenderWidgetHostViewAndroid::OnStartContentIntent(
     const GURL& content_url) {
   if (content_view_core_)
     content_view_core_->StartContentIntent(content_url);
 }
 
@@ skipping 608 matching lines @@
 // RenderWidgetHostView, public:
 
 // static
 RenderWidgetHostView*
 RenderWidgetHostView::CreateViewForWidget(RenderWidgetHost* widget) {
   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(widget);
   return new RenderWidgetHostViewAndroid(rwhi, NULL);
 }
 
 } // namespace content