cc: Give TilingData a Rect instead of a Size

cc/base/tiling_data.h

Index: cc/base/tiling_data.h
diff --git a/cc/base/tiling_data.h b/cc/base/tiling_data.h
index d885c9bda6a5cd1065cf4a8c08eb4f9045bd6883..c273783913c1ca3c72e5373559d289c0415a295b 100644
--- a/cc/base/tiling_data.h
+++ b/cc/base/tiling_data.h
@@ -24,15 +24,15 @@ class CC_EXPORT TilingData {
   TilingData();
   TilingData(
       const gfx::Size& max_texture_size,
-      const gfx::Size& total_size,
+      const gfx::Rect& tiling_rect,
       bool has_border_texels);
   TilingData(
       const gfx::Size& max_texture_size,
-      const gfx::Size& total_size,
+      const gfx::Rect& tiling_rect,
       int border_texels);
 
-  gfx::Size total_size() const { return total_size_; }
-  void SetTotalSize(const gfx::Size& total_size);
+  gfx::Rect tiling_rect() const { return tiling_rect_; }
+  void SetTilingRect(const gfx::Rect& tiling_rect);
 
   gfx::Size max_texture_size() const { return max_texture_size_; }
   void SetMaxTextureSize(const gfx::Size& max_texture_size);
@@ -193,7 +193,7 @@ class CC_EXPORT TilingData {
   void RecomputeNumTiles();
 
   gfx::Size max_texture_size_;
-  gfx::Size total_size_;
+  gfx::Rect tiling_rect_;
   int border_texels_;
 
   // These are computed values.