gtk: Rename GtkThemeService to ThemeServiceGtk.

chrome/browser/ui/gtk/notifications/balloon_view_gtk.h

Index: chrome/browser/ui/gtk/notifications/balloon_view_gtk.h
diff --git a/chrome/browser/ui/gtk/notifications/balloon_view_gtk.h b/chrome/browser/ui/gtk/notifications/balloon_view_gtk.h
index 96ca2d9c24026bc31cc184045cbecc3b21592042..c7e602732fab161c6e04d235174818d20ed0900e 100644
--- a/chrome/browser/ui/gtk/notifications/balloon_view_gtk.h
+++ b/chrome/browser/ui/gtk/notifications/balloon_view_gtk.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
@@ -25,7 +25,7 @@
 
 class BalloonCollection;
 class CustomDrawButton;
-class GtkThemeService;
+class ThemeServiceGtk;
 class MenuGtk;
 class NotificationOptionsMenuModel;
 
@@ -96,7 +96,7 @@ class BalloonViewImpl : public BalloonView,
   // Non-owned pointer to the balloon which owns this object.
   Balloon* balloon_;
 
-  GtkThemeService* theme_service_;
+  ThemeServiceGtk* theme_service_;
 
   // The window that contains the frame of the notification.
   GtkWidget* frame_container_;