Enable BeginFrame scheduling on aura

ui/compositor/compositor.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 "ui/compositor/compositor.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/bind.h"
@@ skipping 246 matching lines @@
 }
 
 void Compositor::SetVisible(bool visible) {
   host_->SetVisible(visible);
 }
 
 bool Compositor::IsVisible() {
   return host_->visible();
 }
 
+void Compositor::SetAuthoritativeVSyncInterval(
+    const base::TimeDelta& interval) {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+         cc::switches::kEnableBeginFrameScheduling)) {
+    host_->SetAuthoritativeVSyncInterval(interval);
+    return;
+  }
+
+  vsync_manager_->SetAuthoritativeVSyncInterval(interval);
+}
+
 scoped_refptr<CompositorVSyncManager> Compositor::vsync_manager() const {
   return vsync_manager_;
 }
 
 void Compositor::AddObserver(CompositorObserver* observer) {
   observer_list_.AddObserver(observer);
 }
 
 void Compositor::RemoveObserver(CompositorObserver* observer) {
   observer_list_.RemoveObserver(observer);
@@ skipping 154 matching lines @@
                     observer_list_,
                     OnCompositingLockStateChanged(this));
 }
 
 void Compositor::CancelCompositorLock() {
   if (compositor_lock_)
     compositor_lock_->CancelLock();
 }
 
 }  // namespace ui