Enable BeginFrame scheduling on aura

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index f7b27291f734aa7e6341222273a5ed98a03c6d15..ddc4d5ca377bf66d58c13d825cf49e9e638413be 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -464,6 +464,7 @@ RenderWidgetHostViewAura::RenderWidgetHostViewAura(RenderWidgetHost* host,
       has_snapped_to_boundary_(false),
       touch_editing_client_(NULL),
       is_guest_view_hack_(is_guest_view_hack),
+      begin_frame_observer_proxy_(this),
       weak_ptr_factory_(this) {
   if (!is_guest_view_hack_)
     host_->SetView(this);
@@ -493,6 +494,8 @@ bool RenderWidgetHostViewAura::OnMessageReceived(
     // RenderWidgetHostViewAndroid should also be moved at the same time.
     IPC_MESSAGE_HANDLER(ViewHostMsg_TextInputStateChanged,
                         OnTextInputStateChanged)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_SetNeedsBeginFrames,
+                        OnSetNeedsBeginFrames)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -722,6 +725,15 @@ ui::TextInputClient* RenderWidgetHostViewAura::GetTextInputClient() {
   return this;
 }
 
+void RenderWidgetHostViewAura::OnSetNeedsBeginFrames(bool needs_begin_frames) {
+  begin_frame_observer_proxy_.SetNeedsBeginFrames(needs_begin_frames);
+}
+
+void RenderWidgetHostViewAura::SendBeginFrame(const cc::BeginFrameArgs& args) {
+  delegated_frame_host_->SetVSyncParameters(args.frame_time, args.interval);
+  host_->Send(new ViewMsg_BeginFrame(host_->GetRoutingID(), args));
+}
+
 void RenderWidgetHostViewAura::SetKeyboardFocus() {
 #if defined(OS_WIN)
   if (CanFocus()) {
@@ -2650,6 +2662,8 @@ void RenderWidgetHostViewAura::AddedToRootWindow() {
 #endif
 
   delegated_frame_host_->SetCompositor(window_->GetHost()->compositor());
+  if (window_->GetHost()->compositor())
+    begin_frame_observer_proxy_.SetCompositor(window_->GetHost()->compositor());
 }
 
 void RenderWidgetHostViewAura::RemovingFromRootWindow() {
@@ -2662,6 +2676,7 @@ void RenderWidgetHostViewAura::RemovingFromRootWindow() {
 
   window_->GetHost()->RemoveObserver(this);
   delegated_frame_host_->ResetCompositor();
+  begin_frame_observer_proxy_.ResetCompositor();
 
 #if defined(OS_WIN)
   // Update the legacy window's parent temporarily to the desktop window. It