Add new latency_info for tracking browser composite time.

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/build_info.h"
 #include "base/basictypes.h"
@@ skipping 1321 matching lines @@
   observing_root_window_ = false;
   content_view_core_->GetWindowAndroid()->RemoveObserver(this);
 }
 
 void RenderWidgetHostViewAndroid::SendBeginFrame(base::TimeTicks frame_time,
                                                  base::TimeDelta vsync_period) {
   TRACE_EVENT1("cc", "RenderWidgetHostViewAndroid::SendBeginFrame",
                "frame_time_us", frame_time.ToInternalValue());
   base::TimeTicks display_time = frame_time + vsync_period;
 
-  // TODO(brianderson): Use adaptive draw-time estimation.
   base::TimeDelta estimated_browser_composite_time =

[brianderson, 2014/09/22 22:59:35]

Can get rid of this local variable now.

[orglofch, 2014/09/22 23:55:14]

Done.

-      base::TimeDelta::FromMicroseconds(
-          (1.0f * base::Time::kMicrosecondsPerSecond) / (3.0f * 60));
+      host_->GetEstimatedBrowserCompositeTime();
 
   base::TimeTicks deadline = display_time - estimated_browser_composite_time;
 
   host_->Send(new ViewMsg_BeginFrame(
       host_->GetRoutingID(),
       cc::BeginFrameArgs::Create(frame_time, deadline, vsync_period)));
 }
 
 bool RenderWidgetHostViewAndroid::Animate(base::TimeTicks frame_time) {
   bool needs_animate =
@@ skipping 511 matching lines @@
   results->orientationAngle = display.RotationAsDegree();
   results->orientationType =
       RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 } // namespace content