Quote WebPreferences in namespace webkit_glue.

ppapi/shared_impl/ppapi_preferences.cc

-// 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.
 
 #include "ppapi/shared_impl/ppapi_preferences.h"
 
 #include "webkit/glue/webpreferences.h"
 
 namespace ppapi {
 
 Preferences::Preferences()
     : default_font_size(0),
       default_fixed_font_size(0),
       is_3d_supported(true) {
 }
 
-Preferences::Preferences(const WebPreferences& prefs)
+Preferences::Preferences(const webkit_glue::WebPreferences& prefs)
     : standard_font_family(prefs.standard_font_family),
       fixed_font_family(prefs.fixed_font_family),
       serif_font_family(prefs.serif_font_family),
       sans_serif_font_family(prefs.sans_serif_font_family),
       default_font_size(prefs.default_font_size),
       default_fixed_font_size(prefs.default_fixed_font_size),
       // Pepper 3D support keys off of WebGL which is what the GPU blacklist
       // is applied to.
       is_3d_supported(prefs.experimental_webgl_enabled) {
 }
 
 Preferences::~Preferences() {
 }
 
 }  // namespace ppapi