views: Add OnEnabledChanged() method to View class.

views/controls/button/checkbox.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_CHECKBOX_H_
 #define VIEWS_CONTROLS_BUTTON_CHECKBOX_H_
 #pragma once
 
 #include <string>
 
@@ skipping 27 matching lines @@
   // the available bounds for the label will be cropped.
   void SetMultiLine(bool multiline);
 
   // Sets/Gets whether or not the checkbox is checked.
   virtual void SetChecked(bool checked);
   bool checked() const { return checked_; }
 
   // Overridden from View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual int GetHeightForWidth(int w) OVERRIDE;
-  virtual void SetEnabled(bool enabled) OVERRIDE;
+  virtual void OnEnabledChanged() OVERRIDE;
   virtual void Layout() OVERRIDE;
   virtual std::string GetClassName() const OVERRIDE;
   virtual bool OnMousePressed(const MouseEvent& event) OVERRIDE;
   virtual bool OnMouseDragged(const MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const MouseEvent& event) OVERRIDE;
   virtual void OnMouseCaptureLost() OVERRIDE;
   virtual void OnMouseMoved(const MouseEvent& event) OVERRIDE;
   virtual void OnMouseEntered(const MouseEvent& event) OVERRIDE;
   virtual void OnMouseExited(const MouseEvent& event) OVERRIDE;
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
@@ skipping 70 matching lines @@
 
   // The button's class name.
   static const char kViewClassName[];
 
   DISALLOW_COPY_AND_ASSIGN(CheckboxNt);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_BUTTON_CHECKBOX_H_