cc: Moved contents_swizzled out of TileManager

cc/resources/tile.h

Index: cc/resources/tile.h
diff --git a/cc/resources/tile.h b/cc/resources/tile.h
index 8d47da76f316f8d463ea879b031d07e26728f97b..c2de9e32871855ab6368c3f53774762811a3ccb7 100644
--- a/cc/resources/tile.h
+++ b/cc/resources/tile.h
@@ -75,7 +75,6 @@ class CC_EXPORT Tile : public base::RefCounted<Tile> {
   const ManagedTileState& managed_state() const { return managed_state_; }
 
   inline size_t bytes_consumed_if_allocated() const {
-    DCHECK(format_ == GL_RGBA);
     return 4 * tile_size_.width() * tile_size_.height();
   }
 
@@ -87,7 +86,6 @@ class CC_EXPORT Tile : public base::RefCounted<Tile> {
   TileManager* tile_manager_;
   scoped_refptr<PicturePileImpl> picture_pile_;
   gfx::Rect tile_size_;
-  GLenum format_;
   gfx::Rect content_rect_;
   float contents_scale_;
   gfx::Rect opaque_rect_;