Send memory management policies to the tile manager

cc/tile_manager.h

 // Copyright 2012 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_TILE_MANAGER_H_
 #define CC_TILE_MANAGER_H_
 
 #include <list>
 #include <queue>
 #include <vector>
@@ skipping 44 matching lines @@
   scoped_ptr<ResourcePool::Resource> resource;
   bool resource_is_being_initialized;
   bool contents_swizzled;
   bool need_to_gather_pixel_refs;
   std::list<skia::LazyPixelRef*> pending_pixel_refs;
 
   // Ephemeral state, valid only during Manage.
   TileManagerBin bin[NUM_TREES];
   // Bin used to determine raster priority.
   TileManagerBin raster_bin;
+  // The bin that the tile would have if the GPU memory manager had a maximally permissive policy,
+  // send to the GPU memory manager to determine policy.
+  TileManagerBin gpu_memmgr_stats_bin;
   TileResolution resolution;
   float time_to_needed_in_seconds;
 };
 
 // This class manages tiles, deciding which should get rasterized and which
 // should no longer have any memory assigned to them. Tile objects are "owned"
 // by layers; they automatically register with the manager when they are
 // created, and unregister from the manager when they are deleted.
 class CC_EXPORT TileManager {
  public:
   TileManager(TileManagerClient* client,
               ResourceProvider *resource_provider,
               size_t num_raster_threads);
   virtual ~TileManager();
 
   const GlobalStateThatImpactsTilePriority& GlobalState() const { return global_state_; }
   void SetGlobalState(const GlobalStateThatImpactsTilePriority& state);
 
   void ManageTiles();
   void CheckForCompletedSetPixels();
+  void GetMemoryStats(size_t* memoryRequiredBytes,
+                      size_t* memoryNiceToHaveBytes,
+                      size_t* memoryUsedBytes);
 
   void GetRenderingStats(RenderingStats* stats);
 
   int GetTilesInBinCount(TileManagerBin bin, WhichTree tree);
   int GetDrawableTilesInBinCount(TileManagerBin bin, WhichTree tree);
 
  protected:
   // Methods called by Tile
   friend class Tile;
   void RegisterTile(Tile*);
@@ skipping 54 matching lines @@
   RasterThreadVector raster_threads_;
 
   RenderingStats rendering_stats_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILE_MANAGER_H_