sync compositor: Reduce begin frame sync IPC overhead

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 <utility>
 
@@ skipping 1399 matching lines @@
   // Synchronous compositor does not use deadline-based scheduling.
   // TODO(brianderson): Replace this hardcoded deadline after Android
   // switches to Surfaces and the Browser's commit isn't in the critcal path.
   base::TimeTicks deadline =
       sync_compositor_ ? base::TimeTicks() : frame_time + (vsync_period * 0.6);
   host_->Send(new ViewMsg_BeginFrame(
       host_->GetRoutingID(),
       cc::BeginFrameArgs::Create(BEGINFRAME_FROM_HERE, frame_time, deadline,
                                  vsync_period, cc::BeginFrameArgs::NORMAL)));
   if (sync_compositor_)
-    sync_compositor_->DidSendBeginFrame();
+    sync_compositor_->DidSendBeginFrame(content_view_core_->GetWindowAndroid());
 }
 
 bool RenderWidgetHostViewAndroid::Animate(base::TimeTicks frame_time) {
   bool needs_animate = false;
   if (overscroll_controller_) {
     needs_animate |= overscroll_controller_->Animate(
         frame_time, content_view_core_->GetLayer());
   }
   if (selection_controller_)
     needs_animate |= selection_controller_->Animate(frame_time);
@@ skipping 553 matching lines @@
     case ui::MotionEvent::ACTION_UP:
     case ui::MotionEvent::ACTION_POINTER_UP:
       UMA_HISTOGRAM_CUSTOM_COUNTS("Event.Latency.OS.TOUCH_RELEASED",
                                   delta.InMicroseconds(), 1, 1000000, 50);
     default:
       return;
   }
 }
 
 }  // namespace content