Quote WebPreferences in namespace webkit_glue.

ash/shell/content_client/shell_content_browser_client.h

Index: ash/shell/content_client/shell_content_browser_client.h
diff --git a/ash/shell/content_client/shell_content_browser_client.h b/ash/shell/content_client/shell_content_browser_client.h
index a9e70f82c2747292cb184fd9e0bb4998ecf6b246..4368c66f2eb12503aeced96782c08a57d3dc8cc2 100644
--- a/ash/shell/content_client/shell_content_browser_client.h
+++ b/ash/shell/content_client/shell_content_browser_client.h
@@ -165,7 +165,7 @@ class ShellContentBrowserClient : public content::ContentBrowserClient {
   virtual bool IsFastShutdownPossible() OVERRIDE;
   virtual void OverrideWebkitPrefs(content::RenderViewHost* rvh,
                                    const GURL& url,
-                                   WebPreferences* prefs) OVERRIDE;
+                                   webkit_glue::WebPreferences* prefs) OVERRIDE;
   virtual void UpdateInspectorSetting(content::RenderViewHost* rvh,
                                       const std::string& key,
                                       const std::string& value) OVERRIDE;