views: Add OnEnabledChanged() method to View class.

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 170 matching lines @@
   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);
 
   // Overridden from View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual gfx::Size GetMinimumSize() OVERRIDE;
-  virtual void SetEnabled(bool enabled) OVERRIDE;
+  virtual void OnEnabledChanged() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
 
   // Text colors.
   static const SkColor kEnabledColor;
   static const SkColor kHighlightColor;
   static const SkColor kDisabledColor;
   static const SkColor kHoverColor;
 
   // Returns views/TextButton.
   virtual std::string GetClassName() const;
@@ skipping 161 matching lines @@
 
   // Space between icon and text.
   int icon_text_spacing_;
 
   DISALLOW_COPY_AND_ASSIGN(TextButton);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_BUTTON_TEXT_BUTTON_H_