Quote WebPreferences in namespace webkit_glue.

content/test/web_contents_tester.h

 // 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.
 
 #ifndef CONTENT_TEST_WEB_CONTENTS_TESTER_H_
 #define CONTENT_TEST_WEB_CONTENTS_TESTER_H_
 #pragma once
 
 #include "content/public/common/page_transition_types.h"
 
 class GURL;
+
+namespace webkit_glue {
 struct WebPreferences;
+}
 
 namespace content {
 
 class BrowserContext;
 struct Referrer;
 class RenderViewHost;
 class SiteInstance;
 class WebContents;
 
 // This interface allows embedders of content/ to write tests that
@@ skipping 79 matching lines @@
                                content::PageTransition transition) = 0;
 
   virtual void TestDidNavigateWithReferrer(
       content::RenderViewHost* render_view_host,
       int page_id,
       const GURL& url,
       const content::Referrer& referrer,
       content::PageTransition transition) = 0;
 
   // Promote GetWebkitPrefs to public.
-  virtual WebPreferences TestGetWebkitPrefs() = 0;
+  virtual webkit_glue::WebPreferences TestGetWebkitPrefs() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_WEB_CONTENTS_TESTER_H_