Reland of cc: Remove frame queuing from the scheduler.

cc/surfaces/direct_compositor_frame_sink.cc

 // Copyright 2014 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/surfaces/direct_compositor_frame_sink.h"
 
 #include "base/bind.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_sink_client.h"
 #include "cc/surfaces/display.h"
@@ skipping 60 matching lines @@
     context_provider()->SetLostContextCallback(base::Closure());
 
   // Avoid initializing GL context here, as this should be sharing the
   // Display's context.
   display_->Initialize(this, surface_manager_, frame_sink_id_);
   return true;
 }
 
 void DirectCompositorFrameSink::DetachFromClient() {
   DCHECK(HasClient());
+
   // Unregister the SurfaceFactoryClient here instead of the dtor so that only
   // one client is alive for this namespace at any given time.
   surface_manager_->UnregisterSurfaceFactoryClient(frame_sink_id_);
   if (!delegated_local_frame_id_.is_null())
     factory_.Destroy(delegated_local_frame_id_);
 
   CompositorFrameSink::DetachFromClient();
 }
 
 void DirectCompositorFrameSink::SwapBuffers(CompositorFrame frame) {
@@ skipping 46 matching lines @@
   // This notification is not relevant to our client outside of tests.
 }
 
 void DirectCompositorFrameSink::DisplayDidDrawAndSwap() {
   // This notification is not relevant to our client outside of tests. We
   // unblock the client from DidDrawCallback() when the surface is going to
   // be drawn.
 }
 
 void DirectCompositorFrameSink::DidDrawCallback() {
-  // TODO(danakj): Why the lost check?
-  if (!is_lost_)
-    client_->DidSwapBuffersComplete();
+  CompositorFrameSink::PostSwapBuffersComplete();
 }
 
 }  // namespace cc