Move ReferencedSurfaceTracker into GpuCompositorFrameSink.

content/browser/renderer_host/offscreen_canvas_compositor_frame_sink.cc

 // Copyright 2016 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 "content/browser/renderer_host/offscreen_canvas_compositor_frame_sink.h"
 
 #include "base/memory/ptr_util.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
 #include "content/browser/renderer_host/offscreen_canvas_compositor_frame_sink_provider_impl.h"
@@ skipping 22 matching lines @@
 OffscreenCanvasCompositorFrameSink::~OffscreenCanvasCompositorFrameSink() {}
 
 void OffscreenCanvasCompositorFrameSink::SetNeedsBeginFrame(
     bool needs_begin_frame) {
   support_.SetNeedsBeginFrame(needs_begin_frame);
 }
 
 void OffscreenCanvasCompositorFrameSink::SubmitCompositorFrame(
     const cc::LocalFrameId& local_frame_id,
     cc::CompositorFrame frame) {
+  // TODO(samans): This will need to do something similar to
+  // GpuCompositorFrameSink.
   support_.SubmitCompositorFrame(local_frame_id, std::move(frame));
 }
 
-void OffscreenCanvasCompositorFrameSink::AddSurfaceReferences(
-    const std::vector<cc::SurfaceReference>& references) {
-  // TODO(fsamuel, staraz): Implement this.
-  NOTIMPLEMENTED();
-}
-
-void OffscreenCanvasCompositorFrameSink::RemoveSurfaceReferences(
-    const std::vector<cc::SurfaceReference>& references) {
-  // TODO(fsamuel, staraz): Implement this.
-  NOTIMPLEMENTED();
-}
-
 void OffscreenCanvasCompositorFrameSink::EvictFrame() {
   support_.EvictFrame();
 }
 
 void OffscreenCanvasCompositorFrameSink::Require(
     const cc::LocalFrameId& local_frame_id,
     const cc::SurfaceSequence& sequence) {
   support_.Require(local_frame_id, sequence);
 }
 
@@ skipping 23 matching lines @@
   if (client_)
     client_->WillDrawSurface();
 }
 
 void OffscreenCanvasCompositorFrameSink::OnClientConnectionLost() {
   provider_->OnCompositorFrameSinkClientConnectionLost(
       support_.frame_sink_id());
 }
 
 }  // namespace content