Update Panel UI looks on Windows.

chrome/browser/ui/panels/panel.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 CHROME_BROWSER_UI_PANELS_PANEL_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_H_
 #pragma once
 
 #include "chrome/browser/ui/browser_window.h"
 
@@ skipping 115 matching lines @@
   virtual WindowOpenDisposition GetDispositionForPopupBounds(
       const gfx::Rect& bounds) OVERRIDE;
 #if defined(OS_CHROMEOS)
   virtual void ShowKeyboardOverlay(gfx::NativeWindow owning_window) OVERRIDE;
 #endif
 
   // Construct a native panel BrowserWindow implementation for the specified
   // |browser|.
   static BrowserWindow* CreateNativePanel(Browser* browser, Panel* panel);
 
+  // Gets the extension from the browser that a panel is created from.
+  // Returns NULL if it cannot be found.
+  static const Extension* GetExtension(Browser* browser);
+
 #ifdef UNIT_TEST
   BrowserWindow* browser_window() { return browser_window_.get(); }
 #endif
 
 #ifndef NDEBUG
   bool closing() const { return closing_; }
 #endif
 
  protected:
   virtual void DestroyBrowser() OVERRIDE;
@@ skipping 27 matching lines @@
   bool closing_;
 #endif
 
   // Is the panel minimized?
   bool minimized_;
 
   DISALLOW_COPY_AND_ASSIGN(Panel);
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_H_