cc: Added tile bundles

cc/layers/picture_layer_impl.h

Index: cc/layers/picture_layer_impl.h
diff --git a/cc/layers/picture_layer_impl.h b/cc/layers/picture_layer_impl.h
index 46526ed124a6f1f5cdf9ff8f275c518575710711..af438e59edc22d4e5bd8756237b581ad0be87334 100644
--- a/cc/layers/picture_layer_impl.h
+++ b/cc/layers/picture_layer_impl.h
@@ -55,12 +55,18 @@ class CC_EXPORT PictureLayerImpl
   // PictureLayerTilingClient overrides.
   virtual scoped_refptr<Tile> CreateTile(PictureLayerTiling* tiling,
                                          gfx::Rect content_rect) OVERRIDE;
+  virtual scoped_refptr<TileBundle> CreateTileBundle(int offset_x,
+                                                     int offset_y,
+                                                     int width,
+                                                     int height) OVERRIDE;
   virtual void UpdatePile(Tile* tile) OVERRIDE;
   virtual gfx::Size CalculateTileSize(
       gfx::Size content_bounds) const OVERRIDE;
   virtual const Region* GetInvalidation() OVERRIDE;
   virtual const PictureLayerTiling* GetTwinTiling(
       const PictureLayerTiling* tiling) const OVERRIDE;
+  virtual bool IsActive() const OVERRIDE;
+  virtual bool IsPending() const OVERRIDE;
 
   // PushPropertiesTo active tree => pending tree.
   void SyncTiling(const PictureLayerTiling* tiling);