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

ui/views/controls/menu/menu_separator.h

Index: ui/views/controls/menu/menu_separator.h
diff --git a/ui/views/controls/menu/menu_separator.h b/ui/views/controls/menu/menu_separator.h
index d404ddb9fa2b6ddc896fbf5198018f81ba07c958..f79582e9697931948acde23c0f67cd9e8e9a206e 100644
--- a/ui/views/controls/menu/menu_separator.h
+++ b/ui/views/controls/menu/menu_separator.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.
 
@@ -16,7 +16,7 @@ class MenuSeparator : public View {
   MenuSeparator() {}
 
   // View overrides.
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnPaint(gfx::CanvasSkia* canvas) OVERRIDE;
   virtual gfx::Size GetPreferredSize() OVERRIDE;
 
  private: