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

chrome/browser/chromeos/panels/panel_scroller_container.h

Index: chrome/browser/chromeos/panels/panel_scroller_container.h
diff --git a/chrome/browser/chromeos/panels/panel_scroller_container.h b/chrome/browser/chromeos/panels/panel_scroller_container.h
index 01de62fec46f436189d837cadb92a9e347b87d4a..2f1dcbc9f9b8c07dc8c222f0ecb92e39a6734cb1 100644
--- a/chrome/browser/chromeos/panels/panel_scroller_container.h
+++ b/chrome/browser/chromeos/panels/panel_scroller_container.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.
 
@@ -24,7 +24,7 @@ class PanelScrollerContainer : public views::View {
   // view::View overrides.
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnPaint(gfx::CanvasSkia* canvas) OVERRIDE;
 
  private:
   // Non-owning pointer to our parent scroller object.