cc: Add tile pool to tile manager.

cc/resources/tile.h

Index: cc/resources/tile.h
diff --git a/cc/resources/tile.h b/cc/resources/tile.h
index fd184a6c75cac9aeca64412618b4aece2ad2a6b7..0b6a67638a54cbd26e44c695de9726b4fe564eef 100644
--- a/cc/resources/tile.h
+++ b/cc/resources/tile.h
@@ -104,7 +104,7 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
     return managed_state_.tile_versions[mode];
   }
 
-  gfx::Size size() const { return tile_size_.size(); }
+  gfx::Size size() const { return tile_size_; }
 
  private:
   friend class TileManager;
@@ -113,23 +113,25 @@ class CC_EXPORT Tile : public RefCountedManaged<Tile> {
   friend class BinComparator;
 
   // Methods called by by tile manager.
-  Tile(TileManager* tile_manager,
-       PicturePileImpl* picture_pile,
-       gfx::Size tile_size,
-       gfx::Rect content_rect,
-       gfx::Rect opaque_rect,
-       float contents_scale,
-       int layer_id,
-       int source_frame_number,
-       bool can_use_lcd_text);
+  explicit Tile(TileManager* tile_manager);
   ~Tile();
 
+  void Reset(PicturePileImpl* picture_pile,
+             gfx::Size tile_size,
+             gfx::Rect content_rect,
+             gfx::Rect opaque_rect,
+             float contents_scale,
+             int layer_id,
+             int source_frame_number,
+             bool can_use_lcd_text);
+
   ManagedTileState& managed_state() { return managed_state_; }
   const ManagedTileState& managed_state() const { return managed_state_; }
+  void reset_picture_pile() { picture_pile_ = NULL; }
 
   TileManager* tile_manager_;
   scoped_refptr<PicturePileImpl> picture_pile_;
-  gfx::Rect tile_size_;
+  gfx::Size tile_size_;
   gfx::Rect content_rect_;
   float contents_scale_;
   gfx::Rect opaque_rect_;