Enable BeginFrame scheduling on aura

content/browser/compositor/browser_compositor_output_surface.cc

Index: content/browser/compositor/browser_compositor_output_surface.cc
diff --git a/content/browser/compositor/browser_compositor_output_surface.cc b/content/browser/compositor/browser_compositor_output_surface.cc
index 7a44c14bb00229d1896955edbaf2c4293aac9401..afcfd163696cbabfb05a58d7fafb44466f2821a8 100644
--- a/content/browser/compositor/browser_compositor_output_surface.cc
+++ b/content/browser/compositor/browser_compositor_output_surface.cc
@@ -13,19 +13,15 @@
 namespace content {
 
 BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
-    const scoped_refptr<cc::ContextProvider>& context_provider,
-    const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager)
+    const scoped_refptr<cc::ContextProvider>& context_provider)
     : OutputSurface(context_provider),
-      vsync_manager_(vsync_manager),
       reflector_(nullptr) {
   Initialize();
 }
 
 BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
-    scoped_ptr<cc::SoftwareOutputDevice> software_device,
-    const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager)
+    scoped_ptr<cc::SoftwareOutputDevice> software_device)
     : OutputSurface(software_device.Pass()),
-      vsync_manager_(vsync_manager),
       reflector_(nullptr) {
   Initialize();
 }
@@ -34,9 +30,6 @@ BrowserCompositorOutputSurface::~BrowserCompositorOutputSurface() {
   if (reflector_)
     reflector_->DetachFromOutputSurface();
   DCHECK(!reflector_);
-  if (!HasClient())
-    return;
-  vsync_manager_->RemoveObserver(this);
 }
 
 void BrowserCompositorOutputSurface::Initialize() {
@@ -48,23 +41,14 @@ bool BrowserCompositorOutputSurface::BindToClient(
     cc::OutputSurfaceClient* client) {
   if (!OutputSurface::BindToClient(client))
     return false;
-  // Don't want vsync notifications until there is a client.
-  vsync_manager_->AddObserver(this);
   return true;
 }
 
-void BrowserCompositorOutputSurface::OnUpdateVSyncParameters(
-    base::TimeTicks timebase,
-    base::TimeDelta interval) {
-  DCHECK(HasClient());
-  CommitVSyncParameters(timebase, interval);
-}
-
 void BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu(
     base::TimeTicks timebase,
     base::TimeDelta interval) {
   DCHECK(HasClient());
-  vsync_manager_->UpdateVSyncParameters(timebase, interval);
+  CommitVSyncParameters(timebase, interval);
 }
 
 void BrowserCompositorOutputSurface::SetReflector(ReflectorImpl* reflector) {