Add avatar decoration to the windows7 taskbar

views/controls/button/text_button.h

 // Copyright (c) 2011 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 VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_
 #define VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_
 #pragma once
 
 #include <string>
 
@@ skipping 309 matching lines @@
   static const char kViewClassName[];
 
   TextButton(ButtonListener* listener, const std::wstring& text);
   virtual ~TextButton();
 
   void set_icon_text_spacing(int icon_text_spacing) {
     icon_text_spacing_ = icon_text_spacing;
   }
 
   // Sets the icon.
-  void SetIcon(const SkBitmap& icon);
-  void SetHoverIcon(const SkBitmap& icon);
-  void SetPushedIcon(const SkBitmap& icon);
+  virtual void SetIcon(const SkBitmap& icon);
+  virtual void SetHoverIcon(const SkBitmap& icon);
+  virtual void SetPushedIcon(const SkBitmap& icon);
 
   bool HasIcon() const { return !icon_.empty(); }
 
   // Meanings are reversed for right-to-left layouts.
   enum IconPlacement {
     ICON_ON_LEFT,
     ICON_ON_RIGHT
   };
 
   IconPlacement icon_placement() { return icon_placement_; }
@@ skipping 78 matching lines @@
   // Overridden from TextButton:
   virtual void GetExtraParams(
       gfx::NativeTheme::ExtraParams* params) const OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(NativeTextButton);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_