Move file_util_icu to base::i18n namespace

ui/base/dragdrop/os_exchange_data_provider_win.cc

Index: ui/base/dragdrop/os_exchange_data_provider_win.cc
diff --git a/ui/base/dragdrop/os_exchange_data_provider_win.cc b/ui/base/dragdrop/os_exchange_data_provider_win.cc
index 1d38f761cd2a923a1b6b481e5993df50290b6312..b80ac402847a13b10f4ac5f287a950ad17a48de2 100644
--- a/ui/base/dragdrop/os_exchange_data_provider_win.cc
+++ b/ui/base/dragdrop/os_exchange_data_provider_win.cc
@@ -917,7 +917,7 @@ static void CreateValidFileNameFromTitle(const GURL& url,
     }
   } else {
     *validated = title;
-    file_util::ReplaceIllegalCharactersInPath(validated, '-');
+    base::i18n::ReplaceIllegalCharactersInPath(validated, '-');
   }
   static const wchar_t extension[] = L".url";
   static const size_t max_length = MAX_PATH - arraysize(extension);