Change NavigationEntry's title fields to carry the text direction.

content/browser/tab_contents/tab_contents.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 CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #pragma once
 
 #include <deque>
 #include <map>
@@ skipping 755 matching lines @@
       const ViewHostMsg_FrameNavigate_Params& params);
 
   // Saves the given title to the navigation entry and does associated work. It
   // will update history and the view for the new title, and also synthesize
   // titles for file URLs that have none (so we require that the URL of the
   // entry already be set).
   //
   // This is used as the backend for state updates, which include a new title,
   // or the dedicated set title message. It returns true if the new title is
   // different and was therefore updated.
-  bool UpdateTitleForEntry(NavigationEntry* entry, const std::wstring& title);
+  bool UpdateTitleForEntry(NavigationEntry* entry,
+                           const base::i18n::String16WithDirection& title);
 
   // Causes the TabContents to navigate in the right renderer to |entry|, which
   // must be already part of the entries in the navigation controller.
   // This does not change the NavigationController state.
   bool NavigateToEntry(const NavigationEntry& entry,
                        NavigationController::ReloadType reload_type);
 
   // Misc non-view stuff -------------------------------------------------------
 
   // Helper functions for sending notifications.
@@ skipping 307 matching lines @@
   ObserverList<TabContentsObserver> observers_;
 
   // Content restrictions, used to disable print/copy etc based on content's
   // (full-page plugins for now only) permissions.
   int content_restrictions_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_