Cleanup: Remove unneeded forward declarations from chrome/browser/ui/gtk and chrome/browser/ui/co...

chrome/browser/ui/gtk/infobars/extension_infobar_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_GTK_INFOBARS_EXTENSION_INFOBAR_GTK_H_
 #define CHROME_BROWSER_UI_GTK_INFOBARS_EXTENSION_INFOBAR_GTK_H_
 #pragma once
 
 #include "chrome/browser/extensions/extension_infobar_delegate.h"
 #include "chrome/browser/extensions/image_loading_tracker.h"
 #include "chrome/browser/ui/gtk/extensions/extension_view_gtk.h"
 #include "chrome/browser/ui/gtk/infobars/infobar_gtk.h"
 #include "chrome/browser/ui/gtk/menu_gtk.h"
 #include "ui/gfx/gtk_util.h"
 
-class ExtensionContextMenuModel;
-class ExtensionInfobarDelegate;
 class ExtensionResource;
 class ExtensionViewGtk;
 class MenuGtk;
 
 class ExtensionInfoBarGtk : public InfoBarGtk,
                             public ImageLoadingTracker::Observer,
                             public MenuGtk::Delegate {
  public:
   ExtensionInfoBarGtk(InfoBarTabHelper* owner,
                       ExtensionInfoBarDelegate* delegate);
@@ skipping 51 matching lines @@
   // An alignment with one pixel of bottom padding. This is set so the |view_|
   // doesn't overlap the bottom separator. This also makes it more convenient
   // to reattach the view since the alignment_ will have the |hbox_| packing
   // child properties. Reparenting becomes easier too.
   GtkWidget* alignment_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionInfoBarGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_INFOBARS_EXTENSION_INFOBAR_GTK_H_