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

chrome/browser/ui/views/avatar_menu_button.h

Index: chrome/browser/ui/views/avatar_menu_button.h
diff --git a/chrome/browser/ui/views/avatar_menu_button.h b/chrome/browser/ui/views/avatar_menu_button.h
index b10a52b1ca3068d3efdcc0d4972218d89b20c810..c4aefabd8d29442f72ec3dfd6b2b114ebb205231 100644
--- a/chrome/browser/ui/views/avatar_menu_button.h
+++ b/chrome/browser/ui/views/avatar_menu_button.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -14,7 +14,7 @@
 #include "ui/views/controls/menu/view_menu_delegate.h"
 
 namespace gfx {
-class Canvas;
+class CanvasSkia;
 class Image;
 }
 class Browser;
@@ -39,7 +39,7 @@ class AvatarMenuButton : public views::MenuButton,
   virtual ~AvatarMenuButton();
 
   // views::MenuButton
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnPaint(gfx::CanvasSkia* canvas) OVERRIDE;
   virtual bool HitTest(const gfx::Point& point) const OVERRIDE;
 
   virtual void SetAvatarIcon(const gfx::Image& icon,