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

chrome/browser/ui/views/tabs/base_tab.h

Index: chrome/browser/ui/views/tabs/base_tab.h
diff --git a/chrome/browser/ui/views/tabs/base_tab.h b/chrome/browser/ui/views/tabs/base_tab.h
index 630b8931e0075eba0451917a2a4c81ad410d79d6..c886af48091e939df110ff6546e56e9c19f71fe3 100644
--- a/chrome/browser/ui/views/tabs/base_tab.h
+++ b/chrome/browser/ui/views/tabs/base_tab.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.
 
@@ -117,8 +117,8 @@ class BaseTab : public ui::AnimationDelegate,
   views::ImageButton* close_button() const { return close_button_; }
 
   // Paints the icon at the specified coordinates, mirrored for RTL if needed.
-  void PaintIcon(gfx::Canvas* canvas);
-  void PaintTitle(gfx::Canvas* canvas, SkColor title_color);
+  void PaintIcon(gfx::CanvasSkia* canvas);
+  void PaintTitle(gfx::CanvasSkia* canvas, SkColor title_color);
 
   // Overridden from AnimationDelegate:
   virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;