GTK: Create the start of a compatibility header wrapping deprecated methods.

chrome/browser/ui/gtk/constrained_window_gtk.cc

 // 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.
 
 #include "chrome/browser/ui/gtk/constrained_window_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 
 #include "base/bind.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/constrained_window_tab_helper.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/public/browser/browser_thread.h"
+#include "ui/base/gtk/gtk_compat.h"
 #include "ui/base/gtk/gtk_hig_constants.h"
 
 #if defined(TOUCH_UI)
 #include "chrome/browser/ui/views/tab_contents/tab_contents_view_views.h"
 #elif defined(TOOLKIT_VIEWS)
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_gtk.h"
 #include "chrome/browser/ui/views/tab_contents/tab_contents_view_views.h"
 #else
 #include "chrome/browser/tab_contents/chrome_tab_contents_view_wrapper_gtk.h"
 #include "chrome/browser/tab_contents/tab_contents_view_gtk.h"
@@ skipping 130 matching lines @@
                    weak_factory_.GetWeakPtr()));
     return TRUE;
   }
 
   return FALSE;
 }
 
 void ConstrainedWindowGtk::OnHierarchyChanged(GtkWidget* sender,
                                               GtkWidget* previous_toplevel) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  if (!GTK_WIDGET_TOPLEVEL(gtk_widget_get_toplevel(widget())))
+  if (!gtk_widget_is_toplevel(gtk_widget_get_toplevel(widget())))
     return;
 
   FocusConstrainedWindow();
 }