cc: Add support for partial swaps when using impl-side painting.

cc/resources/tile_manager.h

Index: cc/resources/tile_manager.h
diff --git a/cc/resources/tile_manager.h b/cc/resources/tile_manager.h
index b392b15eedac3b7442b421914a22e4188989ab95..ddfc7f96fa9dd0cb9d6f37681cb5aecdc08b2fbb 100644
--- a/cc/resources/tile_manager.h
+++ b/cc/resources/tile_manager.h
@@ -176,6 +176,10 @@ class CC_EXPORT TileManager : public RasterWorkerPoolClient,
     }
   }
 
+  void ResetTileRectLayerMap();
+
+  std::map<int, gfx::Rect> GetTileRectLayerMap();
+
  protected:
   TileManager(TileManagerClient* client,
               base::SequencedTaskRunner* task_runner,
@@ -295,6 +299,9 @@ class CC_EXPORT TileManager : public RasterWorkerPoolClient,
   std::vector<scoped_refptr<internal::Task> > orphan_raster_tasks_;
 
   std::vector<PictureLayerImpl*> layers_;
+  gfx::Rect damage_rect_;

[reveman, 2014/04/11 18:11:34]

unused

[sohanjg, 2014/04/14 10:16:11]

Done.

+
+  std::map<int, gfx::Rect> tilemap_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };