views: Convert IsEnabled() to just enabled() since it's just a simple accessor.

ui/views/controls/button/custom_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 UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 #pragma once
 
 #include "ui/base/animation/animation_delegate.h"
 #include "ui/views/controls/button/button.h"
@@ skipping 58 matching lines @@
 
   // Returns true if the mouse pointer is over this control.  Note that this
   // isn't the same as IsHotTracked() because the mouse may be over the control
   // when it's disabled.
   bool IsMouseHovered() const;
 
   // Overridden from View:
   virtual void SetHotTracked(bool flag) OVERRIDE;
   virtual bool IsHotTracked() const OVERRIDE;
   virtual void OnEnabledChanged() OVERRIDE;
-  virtual bool IsEnabled() const 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 OnMouseEntered(const MouseEvent& event) OVERRIDE;
   virtual void OnMouseExited(const MouseEvent& event) OVERRIDE;
   virtual void OnMouseMoved(const MouseEvent& event) OVERRIDE;
   virtual bool OnKeyPressed(const KeyEvent& event) OVERRIDE;
   virtual bool OnKeyReleased(const KeyEvent& event) OVERRIDE;
@@ skipping 50 matching lines @@
 
   // See description above setter.
   bool request_focus_on_press_;
 
   DISALLOW_COPY_AND_ASSIGN(CustomButton);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_