Update Panel mininimize/restore button on strip and expansion state change.

chrome/browser/ui/panels/panel_browser_view.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 CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_VIEW_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_VIEW_H_
 #pragma once
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 104 matching lines @@
   virtual void HandlePanelKeyboardEvent(
       const NativeWebKeyboardEvent& event) OVERRIDE;
   virtual gfx::Size WindowSizeFromContentSize(
       const gfx::Size& content_size) const OVERRIDE;
   virtual gfx::Size ContentSizeFromWindowSize(
       const gfx::Size& window_size) const OVERRIDE;
   virtual int TitleOnlyHeight() const OVERRIDE;
   virtual Browser* GetPanelBrowser() const OVERRIDE;
   virtual void DestroyPanelBrowser() OVERRIDE;
   virtual void EnsurePanelFullyVisible() OVERRIDE;
-  virtual void SetPanelAppIconVisibility(bool visible) OVERRIDE;
   virtual void SetPanelAlwaysOnTop(bool on_top) OVERRIDE;
   virtual void EnableResizeByMouse(bool enable) OVERRIDE;
+  virtual void UpdatePanelMinimizeRestoreButtonVisibility() OVERRIDE;
 
   // Overridden from AnimationDelegate:
   virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE;
   virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
 
   bool EndDragging(bool cancelled);
 
   void SetBoundsInternal(const gfx::Rect& bounds, bool animate);
 
   void ShowOrHidePanelAppIcon(bool show);
@@ skipping 40 matching lines @@
   // The last view that had focus in the panel. This is saved so that focus can
   // be restored properly when a drag ends.
   views::View* old_focused_view_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(PanelBrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_VIEW_H_