Makes the maximize/restore button handling

ash/launcher/launcher_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 ASH_LAUNCHER_LAUNCHER_BUTTON_H_
 #define ASH_LAUNCHER_LAUNCHER_BUTTON_H_
 #pragma once
 
 #include "ui/views/controls/button/custom_button.h"
 #include "ui/views/controls/image_view.h"
@@ skipping 21 matching lines @@
                                 LauncherButtonHost* host);
 
   // Sets the image to display for this entry.
   void SetImage(const SkBitmap& image);
 
   // |state| is or'd into the current state.
   void AddState(State state);
   void ClearState(State state);
   int state() const { return state_; }
 
+  // Returns the bounds of the icon.
+  gfx::Rect GetIconBounds() const;
+
  protected:
   LauncherButton(views::ButtonListener* listener, LauncherButtonHost* host);
 
   // Class that draws the icon part of a button, so it can be animated
   // independently of the rest. This can be subclassed to provide a custom
   // implementation, by overriding CreateIconView().
   class IconView : public views::ImageView {
    public:
     IconView();
     virtual ~IconView();
@@ skipping 41 matching lines @@
   // together.
   int state_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherButton);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_LAUNCHER_APP_LAUNCHER_BUTTON_H_