Add and use a base::i18n::StringWithDirection for carrying titles.

chrome/browser/notifications/balloon_host.h

 // Copyright (c) 2011 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 CHROME_BROWSER_NOTIFICATIONS_BALLOON_HOST_H_
 #define CHROME_BROWSER_NOTIFICATIONS_BALLOON_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 38 matching lines @@
   virtual WebPreferences GetWebkitPrefs();
   virtual SiteInstance* GetSiteInstance() const;
   virtual Profile* GetProfile() const;
   virtual const GURL& GetURL() const;
   virtual void Close(RenderViewHost* render_view_host);
   virtual void RenderViewCreated(RenderViewHost* render_view_host);
   virtual void RenderViewReady(RenderViewHost* render_view_host);
   virtual void RenderViewGone(RenderViewHost* render_view_host,
                               base::TerminationStatus status,
                               int error_code);
-  virtual void UpdateTitle(RenderViewHost* render_view_host,
-                           int32 page_id,
-                           const string16& title,
-                           WebKit::WebTextDirection title_direction) OVERRIDE {}
+  virtual void UpdateTitle(
+      RenderViewHost* render_view_host,
+      int32 page_id,
+      const base::i18n::String16WithDirection& title) OVERRIDE {}
   virtual int GetBrowserWindowID() const;
   virtual ViewType::Type GetRenderViewType() const;
   virtual RenderViewHostDelegate::View* GetViewDelegate();
   virtual void ProcessWebUIMessage(
       const ExtensionHostMsg_DomMessage_Params& params);
 
   // NotificationObserver override.
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
@@ skipping 85 matching lines @@
   // rendering a page from an extension.
   scoped_ptr<ExtensionFunctionDispatcher> extension_function_dispatcher_;
 
   // A flag to enable Web UI.
   bool enable_web_ui_;
 
   NotificationRegistrar registrar_;
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_BALLOON_HOST_H_