views: Add OnEnabledChanged() method to View class.

views/controls/native_control_gtk.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_NATIVE_CONTROL_GTK_H_
 #define VIEWS_CONTROLS_NATIVE_CONTROL_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
 #include "views/controls/native/native_view_host.h"
 
 namespace views {
 
 // A View that hosts a native control.
 class NativeControlGtk : public NativeViewHost {
  public:
   NativeControlGtk();
   virtual ~NativeControlGtk();
 
   // Overridden from View:
-  virtual void SetEnabled(bool enabled);
+  virtual void OnEnabledChanged();
 
  protected:
   virtual void ViewHierarchyChanged(bool is_add, View *parent, View *child);
   virtual void VisibilityChanged(View* starting_from, bool is_visible);
   virtual void OnFocus();
 #if defined(TOUCH_UI)
   virtual bool OnMousePressed(const MouseEvent& event);
   virtual void OnMouseReleased(const MouseEvent& event);
   virtual void OnMouseMoved(const MouseEvent& event);
   virtual void OnMouseExited(const MouseEvent& event);
@@ skipping 17 matching lines @@
   static gboolean CallFocusIn(GtkWidget* widget,
                               GdkEventFocus* event,
                               NativeControlGtk* button);
 
   DISALLOW_COPY_AND_ASSIGN(NativeControlGtk);
 };
 
 }  // namespace views
 
 #endif  // #ifndef VIEWS_CONTROLS_NATIVE_CONTROL_GTK_H_