cc: Rasterize cheap tiles immediately

cc/tile_manager.h

Index: cc/tile_manager.h
diff --git a/cc/tile_manager.h b/cc/tile_manager.h
index 6e42f75bee75d49f48d65720cabd7eb8a46e4a37..80ed08a559f8b682b37b76ea32c1a67031a99f27 100644
--- a/cc/tile_manager.h
+++ b/cc/tile_manager.h
@@ -111,6 +111,7 @@ class CC_EXPORT TileManager {
   void ManageTiles();
   void CheckForCompletedTileUploads();
   void AbortPendingTileUploads();
+  void DidCompleteFrame();
 
   scoped_ptr<base::Value> BasicStateAsValue() const;
   scoped_ptr<base::Value> AllTilesAsValue() const;
@@ -152,10 +153,9 @@ class CC_EXPORT TileManager {
       scoped_refptr<Tile> tile, skia::LazyPixelRef* pixel_ref);
   void OnImageDecodeTaskCompleted(
       scoped_refptr<Tile> tile, uint32_t pixel_ref_id);
-  bool CanDispatchRasterTask(Tile* tile);
+  bool CanDispatchRasterTask(Tile* tile) const;
   scoped_ptr<ResourcePool::Resource> PrepareTileForRaster(Tile* tile);
   void DispatchOneRasterTask(scoped_refptr<Tile> tile);
-  void PerformOneRaster(Tile* tile);
   void OnRasterCompleted(
       scoped_refptr<Tile> tile,
       scoped_ptr<ResourcePool::Resource> resource,
@@ -177,7 +177,7 @@ class CC_EXPORT TileManager {
                             bool use_cheapness_estimator,
                             PicturePileImpl* picture_pile,
                             RenderingStats* stats);
-  static void RunImageDecodeTask(skia::LazyPixelRef* pixel_ref,
+  static void PerformImageDecode(skia::LazyPixelRef* pixel_ref,
                                  RenderingStats* stats);
 
   static void RecordCheapnessPredictorResults(bool is_predicted_cheap,