views: Add OnEnabledChanged() method to View class.

views/controls/button/native_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_NATIVE_BUTTON_H_
 #define VIEWS_CONTROLS_BUTTON_NATIVE_BUTTON_H_
 #pragma once
 
 // TODO(avi): remove when not needed
 #include "base/utf_string_conversions.h"
@@ skipping 40 matching lines @@
   void set_ignore_minimum_size(bool ignore_minimum_size) {
     ignore_minimum_size_ = ignore_minimum_size;
   }
 
   // Called by the wrapper when the actual wrapped native button was pressed.
   void ButtonPressed();
 
   // Overridden from View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
-  virtual void SetEnabled(bool flag) OVERRIDE;
+  virtual void OnEnabledChanged() OVERRIDE;
   virtual void OnFocus() OVERRIDE;
   virtual void OnPaintFocusBorder(gfx::Canvas* canvas) OVERRIDE;
 
  protected:
   virtual void ViewHierarchyChanged(bool is_add, View* parent,
                                     View* child) OVERRIDE;
   virtual std::string GetClassName() const OVERRIDE;
   virtual bool AcceleratorPressed(const Accelerator& accelerator) OVERRIDE;
 
   // Create the button wrapper and returns it. Ownership of the returned
@@ skipping 62 matching lines @@
   virtual ~NativeButton();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NativeButton);
 };
 #endif
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_BUTTON_NATIVE_BUTTON_H_