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

content/browser/tab_contents/tab_contents.cc

 // 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.
 
 #include "content/browser/tab_contents/tab_contents.h"
 
 #include <cmath>
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 1974 matching lines @@
   NavigationEntry* entry = controller_.GetEntryAtIndex(entry_index);
 
   if (state == entry->content_state())
     return;  // Nothing to update.
   entry->set_content_state(state);
   controller_.NotifyEntryChanged(entry, entry_index);
 }
 
 void TabContents::UpdateTitle(RenderViewHost* rvh,
                               int32 page_id,
-                              const string16& title,
-                              WebKit::WebTextDirection title_direction) {
+                              const base::i18n::String16WithDirection& title) {
   // If we have a title, that's a pretty good indication that we've started
   // getting useful data.
   SetNotWaitingForResponse();
 
   DCHECK(rvh == render_view_host());
   NavigationEntry* entry = controller_.GetEntryWithPageID(rvh->site_instance(),
                                                           page_id);
   // TODO(evan): use directionality of title.
   // http://code.google.com/p/chromium/issues/detail?id=27094
-  if (!entry || !UpdateTitleForEntry(entry, UTF16ToWide(title)))
+  if (!entry || !UpdateTitleForEntry(entry, UTF16ToWide(title.string())))
     return;
 
   // Broadcast notifications when the UI should be updated.
   if (entry == controller_.GetEntryAtOffset(0))
     NotifyNavigationStateChanged(INVALIDATE_TITLE);
 }
 
 void TabContents::UpdateEncoding(RenderViewHost* render_view_host,
                                  const std::string& encoding) {
   set_encoding(encoding);
@@ skipping 527 matching lines @@
 
 void TabContents::CreateViewAndSetSizeForRVH(RenderViewHost* rvh) {
   RenderWidgetHostView* rwh_view = view()->CreateViewForWidget(rvh);
   rwh_view->SetSize(view()->GetContainerSize());
 }
 
 void TabContents::OnOnlineStateChanged(bool online) {
   render_view_host()->Send(new ViewMsg_NetworkStateChanged(
       render_view_host()->routing_id(), online));
 }