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

ui/views/controls/button/text_button.h

 // 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 UI_VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_
 #pragma once
 
 #include <string>
 
@@ skipping 38 matching lines @@
     SkBitmap* top_right;
     SkBitmap* left;
     SkBitmap* center;
     SkBitmap* right;
     SkBitmap* bottom_left;
     SkBitmap* bottom;
     SkBitmap* bottom_right;
   };
 
   void Paint(const View& view,
-             gfx::Canvas* canvas,
+             gfx::CanvasSkia* canvas,
              const BorderImageSet& set) const;
 
   void set_normal_set(const BorderImageSet& set) { normal_set_ = set; }
   void set_hot_set(const BorderImageSet& set) { hot_set_ = set; }
   void set_pushed_set(const BorderImageSet& set) { pushed_set_ = set; }
   void set_vertical_padding(int vertical_padding) {
     vertical_padding_ = vertical_padding;
   }
 
  private:
   // Border:
-  virtual void Paint(const View& view, gfx::Canvas* canvas) const OVERRIDE;
+  virtual void Paint(const View& view, gfx::CanvasSkia* canvas) const OVERRIDE;
   virtual void GetInsets(gfx::Insets* insets) const OVERRIDE;
 
   BorderImageSet normal_set_;
   BorderImageSet hot_set_;
   BorderImageSet pushed_set_;
 
   int vertical_padding_;
 
   DISALLOW_COPY_AND_ASSIGN(TextButtonBorder);
 };
 
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // TextButtonNativeThemeBorder
 //
 //  A Border subclass that paints a TextButton's background layer using the
 //  platform's native theme look.  This handles normal/disabled/hot/pressed
 //  states, with possible animation between states.
 //
 ////////////////////////////////////////////////////////////////////////////////
 class VIEWS_EXPORT TextButtonNativeThemeBorder : public Border {
  public:
    TextButtonNativeThemeBorder(NativeThemeDelegate* delegate);
   virtual ~TextButtonNativeThemeBorder();
 
   // Implementation of Border:
-  virtual void Paint(const View& view, gfx::Canvas* canvas) const OVERRIDE;
+  virtual void Paint(const View& view, gfx::CanvasSkia* canvas) const OVERRIDE;
   virtual void GetInsets(gfx::Insets* insets) const OVERRIDE;
 
  private:
   // The delegate the controls the appearance of this border.
   NativeThemeDelegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(TextButtonNativeThemeBorder);
 };
 
 
@@ skipping 81 matching lines @@
   // (if present) in addition to the normal state.  Defaults to true.
   bool show_multiple_icon_states() const { return show_multiple_icon_states_; }
   void SetShowMultipleIconStates(bool show_multiple_icon_states);
 
   // Clears halo and shadow settings.
   void ClearEmbellishing();
 
   // Paint the button into the specified canvas. If |mode| is |PB_FOR_DRAG|, the
   // function paints a drag image representation into the canvas.
   enum PaintButtonMode { PB_NORMAL, PB_FOR_DRAG };
-  virtual void PaintButton(gfx::Canvas* canvas, PaintButtonMode mode);
+  virtual void PaintButton(gfx::CanvasSkia* canvas, PaintButtonMode mode);
 
   // Overridden from View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual gfx::Size GetMinimumSize() OVERRIDE;
   virtual int GetHeightForWidth(int w) OVERRIDE;
   virtual void OnEnabledChanged() OVERRIDE;
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnPaint(gfx::CanvasSkia* canvas) OVERRIDE;
 
   // Returns views/TextButton.
   virtual std::string GetClassName() const OVERRIDE;
 
  protected:
   TextButtonBase(ButtonListener* listener, const string16& text);
 
   // Called when enabled or disabled state changes, or the colors for those
   // states change.
   virtual void UpdateColor();
@@ skipping 117 matching lines @@
   IconPlacement icon_placement() { return icon_placement_; }
   void set_icon_placement(IconPlacement icon_placement) {
     icon_placement_ = icon_placement;
   }
 
   void set_ignore_minimum_size(bool ignore_minimum_size);
 
   // Overridden from View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual std::string GetClassName() const OVERRIDE;
-  virtual void OnPaintFocusBorder(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnPaintFocusBorder(gfx::CanvasSkia* canvas) OVERRIDE;
 
   // Overridden from TextButtonBase:
-  virtual void PaintButton(gfx::Canvas* canvas, PaintButtonMode mode) OVERRIDE;
+  virtual void PaintButton(gfx::CanvasSkia* canvas,
+                           PaintButtonMode mode) OVERRIDE;
 
  protected:
   SkBitmap icon() const { return icon_; }
 
   virtual const SkBitmap& GetImageToPaint() const;
 
   // Overridden from NativeThemeDelegate:
   virtual gfx::NativeTheme::Part GetThemePart() const OVERRIDE;
 
   // Overridden from TextButtonBase:
@@ skipping 44 matching lines @@
 
   // Overridden from TextButton:
   virtual gfx::Size GetMinimumSize() OVERRIDE;
 
   virtual std::string GetClassName() const OVERRIDE;
 
  private:
   void Init();
 
   // Overridden from View:
-  virtual void OnPaintFocusBorder(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnPaintFocusBorder(gfx::CanvasSkia* canvas) OVERRIDE;
 
   // Overridden from TextButton:
   virtual void GetExtraParams(
       gfx::NativeTheme::ExtraParams* params) const OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(NativeTextButton);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_