cc: Add RasterWorkerPool class.

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>
 
 #include "base/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
+#include "cc/rendering_stats.h"
 #include "cc/resource_pool.h"
 #include "cc/tile_priority.h"
 
 namespace cc {
-
-class RasterThread;
+class RasterWorkerPool;
 class ResourceProvider;
 class Tile;
 class TileVersion;
-struct RenderingStats;
 
 class CC_EXPORT TileManagerClient {
  public:
   virtual void ScheduleManageTiles() = 0;
   virtual void ScheduleCheckForCompletedSetPixels() = 0;
 
  protected:
   virtual ~TileManagerClient() {}
 };
 
@@ skipping 38 matching lines @@
 // 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_; }
+  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*);
-  void UnregisterTile(Tile*);
-  void WillModifyTilePriority(Tile*, WhichTree, const TilePriority& new_priority);
+  void RegisterTile(Tile* tile);
+  void UnregisterTile(Tile* tile);
+  void WillModifyTilePriority(
+      Tile* tile, WhichTree tree, const TilePriority& new_priority);
 
  private:
   void ResetBinCounts();
   void AssignGpuMemoryToTiles();
-  void FreeResourcesForTile(Tile*);
+  void FreeResourcesForTile(Tile* tile);
   void ScheduleManageTiles();
   void ScheduleCheckForCompletedSetPixels();
   void DispatchMoreTasks();
-  void DispatchOneRasterTask(RasterThread*, scoped_refptr<Tile>);
+  void GatherPixelRefsForTile(Tile* tile);
+  void DispatchImageDecodeTasksForTile(Tile* tile);
+  void DispatchOneImageDecodeTask(
+      scoped_refptr<Tile> tile, skia::LazyPixelRef* pixel_ref);
+  void OnImageDecodeTaskCompleted(
+      scoped_refptr<Tile> tile, uint32_t pixel_ref_id);
+  void DispatchOneRasterTask(scoped_refptr<Tile> tile);
   void OnRasterTaskCompleted(
-      scoped_refptr<Tile>,
-      scoped_ptr<ResourcePool::Resource>,
-      scoped_refptr<PicturePileImpl>,
-      int manage_tiles_call_count_when_dispatched,
-      RenderingStats*);
-  void DidFinishTileInitialization(Tile*);
-  void DispatchImageDecodingTasksForTile(Tile*);
-  void OnImageDecodingTaskCompleted(scoped_refptr<Tile>,
-                                    uint32_t,
-                                    RenderingStats*);
-  void DispatchOneImageDecodingTask(
-      RasterThread*, scoped_refptr<Tile>, skia::LazyPixelRef*);
-  void GatherPixelRefsForTile(Tile*);
-  RasterThread* GetFreeRasterThread();
+      scoped_refptr<Tile> tile,
+      scoped_ptr<ResourcePool::Resource> resource,
+      int manage_tiles_call_count_when_dispatched);
+  void DidFinishTileInitialization(Tile* tile);
 
   TileManagerClient* client_;
   scoped_ptr<ResourcePool> resource_pool_;
+  scoped_ptr<RasterWorkerPool> raster_worker_;
   bool manage_tiles_pending_;
   int manage_tiles_call_count_;
   bool check_for_completed_set_pixels_pending_;
 
   GlobalStateThatImpactsTilePriority global_state_;
 
   int tiles_in_bin_count_[NUM_BINS][NUM_TREES];
   int drawable_tiles_in_bin_count_[NUM_BINS][NUM_TREES];
 
   typedef std::vector<Tile*> TileVector;
   TileVector tiles_;
   TileVector tiles_that_need_to_be_rasterized_;
 
   typedef std::list<Tile*> TileList;
   // Tiles with image decoding tasks. These tiles need to be rasterized
   // when all the image decoding tasks finish.
   TileList tiles_with_image_decoding_tasks_;
 
   typedef base::hash_map<uint32_t, skia::LazyPixelRef*> PixelRefMap;
   PixelRefMap pending_decode_tasks_;
 
   typedef std::queue<scoped_refptr<Tile> > TileQueue;
   TileQueue tiles_with_pending_set_pixels_;
 
-  typedef ScopedPtrVector<RasterThread> RasterThreadVector;
-  RasterThreadVector raster_threads_;
-
   RenderingStats rendering_stats_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILE_MANAGER_H_