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

chrome/browser/ui/views/location_bar/icon_label_bubble_view.h

-// 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ICON_LABEL_BUBBLE_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ICON_LABEL_BUBBLE_VIEW_H_
 #pragma once
 
 #include <string>
 
 #include "base/string16.h"
 #include "ui/gfx/size.h"
 #include "ui/views/painter.h"
 #include "ui/views/view.h"
 
 namespace gfx {
-class Canvas;
+class CanvasSkia;
 class Font;
 }
 namespace views {
 class ImageView;
 class Label;
 }
 
 class SkBitmap;
 
 // View used to draw a bubble to the left of the address, containing an icon and
 // a label.  We use this as a base for the classes that handle the EV bubble and
 // tab-to-search UI.
 class IconLabelBubbleView : public views::View {
  public:
   IconLabelBubbleView(const int background_images[],
                       int contained_image,
                       const SkColor& color);
   virtual ~IconLabelBubbleView();
 
   void SetFont(const gfx::Font& font);
   void SetLabel(const string16& label);
   void SetImage(const SkBitmap& bitmap);
   void set_is_extension_icon(bool is_extension_icon) {
     is_extension_icon_ = is_extension_icon;
   }
 
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnPaint(gfx::CanvasSkia* canvas) OVERRIDE;
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
 
  protected:
   void SetElideInMiddle(bool elide_in_middle);
   gfx::Size GetNonLabelSize() const;
 
  private:
   int GetPreLabelWidth() const;
   int GetNonLabelWidth() const;
 
   // For painting the background.
   views::HorizontalPainter background_painter_;
 
   // The contents of the bubble.
   views::ImageView* image_;
   views::Label* label_;
 
   bool is_extension_icon_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(IconLabelBubbleView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ICON_LABEL_BUBBLE_VIEW_H_