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

content/browser/tab_contents/navigation_entry.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_NAVIGATION_ENTRY_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_NAVIGATION_ENTRY_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
+#include "base/i18n/rtl.h"
 #include "chrome/common/security_style.h"
 #include "content/common/page_transition_types.h"
 #include "content/common/page_type.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
 class SiteInstance;
 
 ////////////////////////////////////////////////////////////////////////////////
 //
@@ skipping 239 matching lines @@
     return update_virtual_url_with_url_;
   }
   void set_update_virtual_url_with_url(bool update) {
     update_virtual_url_with_url_ = update;
   }
 
   // The title as set by the page. This will be empty if there is no title set.
   // The caller is responsible for detecting when there is no title and
   // displaying the appropriate "Untitled" label if this is being displayed to
   // the user.
+  void set_title(const base::i18n::String16WithDirection& title) {
+    set_title(title.string());
+  }
+  // TODO(evan): remove the string16-setter once callers are updated.
+  // http://code.google.com/p/chromium/issues/detail?id=27094
   void set_title(const string16& title) {
     title_ = title;
     cached_display_title_.clear();
   }
   const string16& title() const {
     return title_;
   }
 
   // The favicon data and tracking information. See FaviconStatus above.
   const FaviconStatus& favicon() const {
@@ skipping 138 matching lines @@
   // This is a cached version of the result of GetTitleForDisplay. It prevents
   // us from having to do URL formatting on the URL evey time the title is
   // displayed. When the URL, virtual URL, or title is set, this should be
   // cleared to force a refresh.
   string16 cached_display_title_;
 
   // Copy and assignment is explicitly allowed for this class.
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_NAVIGATION_ENTRY_H_