cc: Give TilingData a Rect instead of a Size

cc/resources/picture_layer_tiling.h

Index: cc/resources/picture_layer_tiling.h
diff --git a/cc/resources/picture_layer_tiling.h b/cc/resources/picture_layer_tiling.h
index 6c72603d1c2292efac68723905632a87dc6acaee..46ec12431c6eeb6d5efff520ce0d9a0577bf7b8f 100644
--- a/cc/resources/picture_layer_tiling.h
+++ b/cc/resources/picture_layer_tiling.h
@@ -131,8 +131,7 @@ class CC_EXPORT PictureLayerTiling {
   void set_resolution(TileResolution resolution) { resolution_ = resolution; }
   TileResolution resolution() const { return resolution_; }
 
-  gfx::Rect ContentRect() const;
-  gfx::SizeF ContentSizeF() const;
+  gfx::Rect TilingRect() const;
   gfx::Rect live_tiles_rect() const { return live_tiles_rect_; }
   gfx::Size tile_size() const { return tiling_data_.max_texture_size(); }
   float contents_scale() const { return contents_scale_; }
@@ -143,7 +142,7 @@ class CC_EXPORT PictureLayerTiling {
   }
 
   void CreateAllTilesForTesting() {
-    SetLiveTilesRect(gfx::Rect(tiling_data_.total_size()));
+    SetLiveTilesRect(tiling_data_.tiling_rect());
   }
 
   std::vector<Tile*> AllTilesForTesting() const {