ui/gfx: Make gfx::Canvas inherit from gfx::CanvasSkia.

ui/base/dragdrop/drag_utils.h

Index: ui/base/dragdrop/drag_utils.h
diff --git a/ui/base/dragdrop/drag_utils.h b/ui/base/dragdrop/drag_utils.h
index b81511d70ef1bd849dccd2f11327c82b28523631..bf4e45b628b208e3c053d03b39e132af49c0a2a3 100644
--- a/ui/base/dragdrop/drag_utils.h
+++ b/ui/base/dragdrop/drag_utils.h
@@ -15,7 +15,7 @@ class GURL;
 class SkBitmap;
 
 namespace gfx {
-class Canvas;
+class CanvasSkia;

[Ben Goodger (Google), 2012/03/06 15:46:58]

????

 class Point;
 class Size;
 }
@@ -38,7 +38,7 @@ UI_EXPORT void CreateDragImageForFile(const FilePath& file_name,
 // Sets the drag image on data_object from the supplied canvas. width/height
 // are the size of the image to use, and the offsets give the location of
 // the hotspot for the drag image.
-UI_EXPORT void SetDragImageOnDataObject(const gfx::Canvas& canvas,
+UI_EXPORT void SetDragImageOnDataObject(const gfx::CanvasSkia& canvas,
                                         const gfx::Size& size,
                                         const gfx::Point& cursor_offset,
                                         ui::OSExchangeData* data_object);