Android: Decouple animate from vsync

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/android/sys_utils.h"
 #include "base/basictypes.h"
@@ skipping 1014 matching lines @@
   if (!content_view_core_)
     return;
   if (!layer_.get())
     return;
 
   content_view_core_->RemoveLayer(layer_);
   overscroll_effect_->Disable();
 }
 
 void RenderWidgetHostViewAndroid::SetNeedsAnimate() {
-  content_view_core_->GetWindowAndroid()->RequestVSyncUpdate();
+  content_view_core_->GetWindowAndroid()->SetNeedsAnimate();
 }
 
 bool RenderWidgetHostViewAndroid::Animate(base::TimeTicks frame_time) {
   return overscroll_effect_->Animate(frame_time);
 }
 
 void RenderWidgetHostViewAndroid::AcceleratedSurfacePostSubBuffer(
     const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
     int gpu_host_id) {
   NOTREACHED();
@@ skipping 283 matching lines @@
   base::TimeDelta estimated_browser_composite_time =
       base::TimeDelta::FromMicroseconds(
           (1.0f * base::Time::kMicrosecondsPerSecond) / (3.0f * 60));
 
   base::TimeTicks deadline = display_time - estimated_browser_composite_time;
 
   host_->Send(new ViewMsg_BeginFrame(
       host_->GetRoutingID(),
       cc::BeginFrameArgs::Create(frame_time, deadline, vsync_period)));
 
-  // TODO(sievers): This should use the LayerTreeHostClient callback
-  bool needs_animate = Animate(frame_time);
-  if (needs_begin_frame_ || needs_animate)
+  if (needs_begin_frame_)
     content_view_core_->GetWindowAndroid()->RequestVSyncUpdate();
 }
 
+void RenderWidgetHostViewAndroid::OnAnimate(base::TimeTicks begin_frame_time) {
+  if (Animate(begin_frame_time))
+    SetNeedsAnimate();
+}
+
 void RenderWidgetHostViewAndroid::OnLostResources() {
   ReleaseLocksOnSurface();
   if (layer_.get())
     DestroyDelegatedContent();
   DCHECK(ack_callbacks_.empty());
 }
 
 // static
 void
 RenderWidgetHostViewAndroid::PrepareTextureCopyOutputResultForDelegatedReadback(
@@ skipping 97 matching lines @@
   results->availableRect = display.work_area();
   results->deviceScaleFactor = display.device_scale_factor();
   results->orientationAngle = display.RotationAsDegree();
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 } // namespace content