cc: Add support for sending BeginFrames for video.

cc/trees/thread_proxy.cc

 // Copyright 2011 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 "cc/trees/thread_proxy.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 383 matching lines @@
   TRACE_EVENT0("cc", "ThreadProxy::NotifyReadyToDraw");
   impl().scheduler->NotifyReadyToDraw();
 }
 
 void ThreadProxy::SetNeedsCommitOnImplThread() {
   TRACE_EVENT0("cc", "ThreadProxy::SetNeedsCommitOnImplThread");
   DCHECK(IsImplThread());
   impl().scheduler->SetNeedsCommit();
 }
 
+void ThreadProxy::SetVideoNeedsBeginFrames(bool needs_begin_frames) {
+  TRACE_EVENT1("cc", "ThreadProxy::SetVideoNeedsBeginFrames",
+               "needs_begin_frames", needs_begin_frames);
+  DCHECK(IsImplThread());
+  // In tests the layer tree is destroyed after the scheduler is.
+  if (impl().scheduler)
+    impl().scheduler->SetVideoNeedsBeginFrames(needs_begin_frames);
+}
+
 void ThreadProxy::PostAnimationEventsToMainThreadOnImplThread(
     scoped_ptr<AnimationEventsVector> events) {
   TRACE_EVENT0("cc",
                "ThreadProxy::PostAnimationEventsToMainThreadOnImplThread");
   DCHECK(IsImplThread());
   Proxy::MainThreadTaskRunner()->PostTask(
       FROM_HERE,
       base::Bind(&ThreadProxy::SetAnimationEvents,
                  main_thread_weak_ptr_,
                  base::Passed(&events)));
@@ skipping 985 matching lines @@
       FROM_HERE, base::Bind(&ThreadProxy::DidCompletePageScaleAnimation,
                             main_thread_weak_ptr_));
 }
 
 void ThreadProxy::OnDrawForOutputSurface() {
   DCHECK(IsImplThread());
   impl().scheduler->OnDrawForOutputSurface();
 }
 
 }  // namespace cc