Remove wstrings in bookmarks, part 5.

chrome/browser/history/expire_history_backend_unittest.cc

 // Copyright (c) 2010 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 "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/scoped_ptr.h"
@@ skipping 60 matching lines @@
 
   // Clears the list of notifications received.
   void ClearLastNotifications() {
     for (size_t i = 0; i < notifications_.size(); i++)
       delete notifications_[i].second;
     notifications_.clear();
   }
 
   void StarURL(const GURL& url) {
     bookmark_model_.AddURL(
-        bookmark_model_.GetBookmarkBarNode(), 0, std::wstring(), url);
+        bookmark_model_.GetBookmarkBarNode(), 0, string16(), url);
   }
 
   static bool IsStringInFile(const FilePath& filename, const char* str);
 
   BookmarkModel bookmark_model_;
 
   MessageLoop message_loop_;
 
   ExpireHistoryBackend expirer_;
 
@@ skipping 722 matching lines @@
   EXPECT_TRUE(all->Read(now, main_db_.get(), &visits, 1));
   EXPECT_EQ(1U, visits.size());
 }
 
 // TODO(brettw) add some visits with no URL to make sure everything is updated
 // properly. Have the visits also refer to nonexistant FTS rows.
 //
 // Maybe also refer to invalid favicons.
 
 }  // namespace history