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

content/browser/tab_contents/interstitial_page.h

Index: content/browser/tab_contents/interstitial_page.h
diff --git a/content/browser/tab_contents/interstitial_page.h b/content/browser/tab_contents/interstitial_page.h
index 7523050ffbf63bf43961e3d66446458b920cbf7d..759d8b3fc22aa5e8cb34dad1f340a2f4af67885b 100644
--- a/content/browser/tab_contents/interstitial_page.h
+++ b/content/browser/tab_contents/interstitial_page.h
@@ -9,6 +9,7 @@
 #include <map>
 #include <string>
 
+#include "base/i18n/rtl.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/process_util.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
@@ -227,7 +228,7 @@ class InterstitialPage : public NotificationObserver,
 
   // The original title of the tab that should be reverted to when the
   // interstitial is hidden.
-  std::wstring original_tab_title_;
+  base::i18n::String16WithDirection original_tab_title_;
 
   // Our RenderViewHostViewDelegate, necessary for accelerators to work.
   scoped_ptr<InterstitialPageRVHViewDelegate> rvh_view_delegate_;