Move ReferencedSurfaceTracker into GpuCompositorFrameSink.

components/exo/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 "components/exo/compositor_frame_sink.h"
 
 #include "base/memory/ptr_util.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
 #include "components/exo/compositor_frame_sink_holder.h"
@@ skipping 18 matching lines @@
 void CompositorFrameSink::SetNeedsBeginFrame(bool needs_begin_frame) {
   support_.SetNeedsBeginFrame(needs_begin_frame);
 }
 
 void CompositorFrameSink::SubmitCompositorFrame(
     const cc::LocalFrameId& local_frame_id,
     cc::CompositorFrame frame) {
   support_.SubmitCompositorFrame(local_frame_id, std::move(frame));
 }
 
-void CompositorFrameSink::AddSurfaceReferences(
-    const std::vector<cc::SurfaceReference>& references) {
-  // TODO(fsamuel, staraz): Implement this.
-  NOTIMPLEMENTED();
-}
-
-void CompositorFrameSink::RemoveSurfaceReferences(
-    const std::vector<cc::SurfaceReference>& references) {
-  // TODO(fsamuel, staraz): Implement this.
-  NOTIMPLEMENTED();
-}
-
 void CompositorFrameSink::EvictFrame() {
   support_.EvictFrame();
 }
 
 void CompositorFrameSink::Require(const cc::LocalFrameId& local_frame_id,
                                   const cc::SurfaceSequence& sequence) {
   support_.Require(local_frame_id, sequence);
 }
 
 void CompositorFrameSink::Satisfy(const cc::SurfaceSequence& sequence) {
@@ skipping 14 matching lines @@
 void CompositorFrameSink::ReclaimResources(
     const cc::ReturnedResourceArray& resources) {
   client_->ReclaimResources(resources);
 }
 
 void CompositorFrameSink::WillDrawSurface() {
   client_->WillDrawSurface();
 }
 
 }  // namespace exo