Enable BeginFrame scheduling on aura

content/browser/compositor/delegated_frame_host.cc

Index: content/browser/compositor/delegated_frame_host.cc
diff --git a/content/browser/compositor/delegated_frame_host.cc b/content/browser/compositor/delegated_frame_host.cc
index 026e0e0dba7c2dedfe362aa361ca5f1130d9162b..ffd2cb2547c9b17996446051e323d1369d6ef9f9 100644
--- a/content/browser/compositor/delegated_frame_host.cc
+++ b/content/browser/compositor/delegated_frame_host.cc
@@ -905,13 +905,10 @@ void DelegatedFrameHost::OnCompositingShuttingDown(ui::Compositor* compositor) {
   DCHECK(!compositor_);
 }
 
-void DelegatedFrameHost::OnUpdateVSyncParameters(
-    base::TimeTicks timebase,
-    base::TimeDelta interval) {
+void DelegatedFrameHost::SetVSyncParameters(base::TimeTicks timebase,
+                                            base::TimeDelta interval) {
   vsync_timebase_ = timebase;
   vsync_interval_ = interval;
-  if (client_->DelegatedFrameHostIsVisible())
-    client_->DelegatedFrameHostUpdateVSyncParameters(timebase, interval);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -942,8 +939,6 @@ DelegatedFrameHost::~DelegatedFrameHost() {
     surface_factory_->Destroy(surface_id_);
   if (resource_collection_.get())
     resource_collection_->SetClient(NULL);
-
-  DCHECK(!vsync_manager_.get());
 }
 
 void DelegatedFrameHost::RunOnCommitCallbacks() {
@@ -970,9 +965,6 @@ void DelegatedFrameHost::SetCompositor(ui::Compositor* compositor) {
     return;
   compositor_ = compositor;
   compositor_->AddObserver(this);
-  DCHECK(!vsync_manager_.get());
-  vsync_manager_ = compositor_->vsync_manager();
-  vsync_manager_->AddObserver(this);
 }
 
 void DelegatedFrameHost::ResetCompositor() {
@@ -985,10 +977,6 @@ void DelegatedFrameHost::ResetCompositor() {
   }
   if (compositor_->HasObserver(this))
     compositor_->RemoveObserver(this);
-  if (vsync_manager_.get()) {
-    vsync_manager_->RemoveObserver(this);
-    vsync_manager_ = NULL;
-  }
   compositor_ = nullptr;
 }