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

chrome/browser/ui/gtk/hover_controller_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/hover_controller_gtk.h"
 
 #include "base/message_loop.h"
 #include "chrome/browser/ui/gtk/gtk_chrome_button.h"
+#include "ui/base/gtk/gtk_compat.h"
 
 static const gchar* kHoverControllerGtkKey = "__HOVER_CONTROLLER_GTK__";
 
 HoverControllerGtk::HoverControllerGtk(GtkWidget* button)
     : throb_animation_(this),
       hover_animation_(this),
       button_(button) {
   g_object_ref(button_);
   gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0);
 
@@ skipping 88 matching lines @@
     hover_animation_.Hide();
   }
 
   return FALSE;
 }
 
 void HoverControllerGtk::OnHierarchyChanged(GtkWidget* widget,
                                             GtkWidget* previous_toplevel) {
   // GTK+ does not emit leave-notify-event signals when a widget
   // becomes unanchored, so manually unset the hover states.
-  if (!GTK_WIDGET_TOPLEVEL(gtk_widget_get_toplevel(widget))) {
+  if (!gtk_widget_is_toplevel(gtk_widget_get_toplevel(widget))) {
     gtk_widget_set_state(button_, GTK_STATE_NORMAL);
     hover_animation_.Reset();
     gtk_chrome_button_set_hover_state(GTK_CHROME_BUTTON(button_), 0.0);
   }
 }
 
 void HoverControllerGtk::OnDestroy(GtkWidget* widget) {
   Destroy();
 }