GTK: Make the gtk port compile with GTK_DISABLE_SINGLE_INCLUDES.

chrome/browser/ui/gtk/bubble/bubble_accelerators_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_BUBBLE_BUBBLE_ACCELERATORS_GTK_H_
 #define CHROME_BROWSER_UI_GTK_BUBBLE_BUBBLE_ACCELERATORS_GTK_H_
 #pragma once
 
-#include <gdk/gdktypes.h>
-#include <glib.h>
+#include <gdk/gdk.h>
 
 #include "base/basictypes.h"
 
 struct BubbleAcceleratorGtk {
   guint keyval;
   GdkModifierType modifier_type;
 };
 
 // This class contains a list of accelerators that a BubbleGtk is expected to
 // either catch and respond to or catch and forward to the root browser window.
 // This list is expected to be a subset of the accelerators that are handled by
 // the root browser window, but the specific accelerators to be handled has not
 // yet been fully specified.
 class BubbleAcceleratorsGtk {
  public:
   typedef const BubbleAcceleratorGtk* const_iterator;
 
   static const_iterator begin();
   static const_iterator end();
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(BubbleAcceleratorsGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_BUBBLE_BUBBLE_ACCELERATORS_GTK_H_