cc: Add tiling raster tile iterators.

cc/resources/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_RESOURCES_TILE_MANAGER_H_
 #define CC_RESOURCES_TILE_MANAGER_H_
 
 #include <queue>
 #include <set>
 #include <vector>
@@ skipping 156 matching lines @@
                              scoped_ptr<ScopedResource> resource,
                              RasterMode raster_mode,
                              const PicturePileImpl::Analysis& analysis,
                              bool was_canceled);
 
   inline size_t BytesConsumedIfAllocated(const Tile* tile) const {
     return Resource::MemorySizeBytes(tile->size(),
                                      raster_worker_pool_->GetResourceFormat());
   }
 
-  RasterMode DetermineRasterMode(const Tile* tile) const;
   void FreeResourceForTile(Tile* tile, RasterMode mode);
   void FreeResourcesForTile(Tile* tile);
   void FreeUnusedResourcesForTile(Tile* tile);
   scoped_refptr<internal::WorkerPoolTask> CreateImageDecodeTask(
       Tile* tile,
       SkPixelRef* pixel_ref);
   scoped_refptr<internal::RasterWorkerPoolTask> CreateRasterTask(Tile* tile);
   scoped_ptr<base::Value> GetMemoryRequirementsAsValue() const;
   void UpdatePrioritizedTileSetIfNeeded();
 
@@ skipping 47 matching lines @@
   RasterTaskQueue raster_queue_[NUM_RASTER_WORKER_POOL_TYPES];
 
   std::vector<scoped_refptr<internal::Task> > orphan_raster_tasks_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_MANAGER_H_