ash: Update app list button.

ui/views/controls/button/image_button.h

 // Copyright (c) 2012 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_IMAGE_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_IMAGE_BUTTON_H_
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/image/image_skia.h"
@@ skipping 91 matching lines @@
 // A toggle-able ImageButton.  It swaps out its graphics when toggled.
 //
 ////////////////////////////////////////////////////////////////////////////////
 class VIEWS_EXPORT ToggleImageButton : public ImageButton {
  public:
   explicit ToggleImageButton(ButtonListener* listener);
   virtual ~ToggleImageButton();
 
   // Change the toggled state.
   void SetToggled(bool toggled);
+  bool toggled() const { return toggled_; }
 
   // Like ImageButton::SetImage(), but to set the graphics used for the
   // "has been toggled" state.  Must be called for each button state
   // before the button is toggled.
   void SetToggledImage(ButtonState state, const gfx::ImageSkia* image);
 
   // Set the tooltip text displayed when the button is toggled.
   void SetToggledTooltipText(const string16& tooltip);
 
   // Overridden from ImageButton:
@@ skipping 18 matching lines @@
   // The parent class's tooltip_text_ is displayed when not toggled, and
   // this one is shown when toggled.
   string16 toggled_tooltip_text_;
 
   DISALLOW_COPY_AND_ASSIGN(ToggleImageButton);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_IMAGE_BUTTON_H_