Add DisplayScheduler for Surfaces

cc/surfaces/surface_aggregator.h

 // 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.
 
 #ifndef CC_SURFACES_SURFACE_AGGREGATOR_H_
 #define CC_SURFACES_SURFACE_AGGREGATOR_H_
 
 #include <set>
 
 #include "base/containers/hash_tables.h"
@@ skipping 13 matching lines @@
 class SurfaceDrawQuad;
 class SurfaceManager;
 
 class CC_SURFACES_EXPORT SurfaceAggregator {
  public:
   typedef base::hash_map<SurfaceId, int> SurfaceIndexMap;
 
   SurfaceAggregator(SurfaceManager* manager, ResourceProvider* provider);
   ~SurfaceAggregator();
 
+  bool CanAggregate();

[jbauman, 2015/04/03 22:27:51]

Doesn't seem to be implemented.

   scoped_ptr<CompositorFrame> Aggregate(SurfaceId surface_id);
   void ReleaseResources(SurfaceId surface_id);
   SurfaceIndexMap& previous_contained_surfaces() {
     return previous_contained_surfaces_;
   }
 
  private:
   struct ClipData {
     ClipData() : is_clipped(false) {}
     ClipData(bool is_clipped, const gfx::Rect& rect)
@@ skipping 69 matching lines @@
 
   // Resource list for the aggregated frame.
   TransferableResourceArray* dest_resource_list_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfaceAggregator);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_SURFACE_AGGREGATOR_H_