Quote WebPreferences in namespace webkit_glue.

webkit/plugins/webview_plugin.h

Index: webkit/plugins/webview_plugin.h
diff --git a/webkit/plugins/webview_plugin.h b/webkit/plugins/webview_plugin.h
index 403b80d4d9ba0e1d808ee63b2567a84ff85d5fa4..9d50b826e48f680e2c5d6a1945057f5f3a37cb0b 100644
--- a/webkit/plugins/webview_plugin.h
+++ b/webkit/plugins/webview_plugin.h
@@ -20,7 +20,10 @@
 namespace WebKit {
 class WebMouseEvent;
 }
+
+namespace webkit_glue {
 struct WebPreferences;
+}
 
 namespace webkit {
 
@@ -56,7 +59,7 @@ class WebViewPlugin: public WebKit::WebPlugin, public WebKit::WebViewClient,
   // only used for navigation and never actually resolved.
   WEBKIT_PLUGINS_EXPORT static WebViewPlugin* Create(
       Delegate* delegate,
-      const WebPreferences& preferences,
+      const webkit_glue::WebPreferences& preferences,
       const std::string& html_data,
       const GURL& url);