Cleanup: Remove unneeded forward declarations from chrome/browser/ui/views.

chrome/browser/ui/views/frame/browser_frame_gtk.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_VIEWS_FRAME_BROWSER_FRAME_GTK_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_FRAME_GTK_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/ui/views/frame/browser_frame.h"
 #include "chrome/browser/ui/views/frame/native_browser_frame.h"
 #include "views/widget/native_widget_gtk.h"
 
-class BrowserNonClientFrameView;
-class BrowserRootView;
-
 class BrowserFrameGtk : public views::NativeWidgetGtk,
                         public NativeBrowserFrame {
  public:
   // Normally you will create this class by calling BrowserFrame::Create.
   // Init must be called before using this class, which Create will do for you.
   BrowserFrameGtk(BrowserFrame* browser_frame, BrowserView* browser_view);
   virtual ~BrowserFrameGtk();
 
  protected:
   // Overridden from NativeBrowserFrame:
@@ skipping 11 matching lines @@
  private:
   NativeBrowserFrameDelegate* delegate_;
 
   // The BrowserView is our ClientView. This is a pointer to it.
   BrowserView* browser_view_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserFrameGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_FRAME_GTK_H_