Remove some wstrings in test_shell.

webkit/tools/test_shell/test_shell.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 159 matching lines @@
     void ResetTestController();
 
     // Passes options from LayoutTestController through to the delegate (or
     // any other caller).
     bool AcceptsEditing() {
       return layout_test_controller_->AcceptsEditing();
     }
 
     void LoadFile(const FilePath& file);
     void LoadURL(const GURL& url);
-    void LoadURLForFrame(const GURL& url, const std::wstring& frame_name);
+    void LoadURLForFrame(const GURL& url, const string16& frame_name);
     void GoBackOrForward(int offset);
     void Reload();
     bool Navigate(const TestNavigationEntry& entry, bool reload);
 
     bool PromptForSaveFile(const wchar_t* prompt_title, FilePath* result);
     string16 GetDocumentText();
     void DumpDocumentText();
     void DumpRenderTree();
 
     gfx::NativeWindow mainWnd() const { return m_mainWnd; }
@@ skipping 247 matching lines @@
 #if defined(OS_WIN)
     // Used by the watchdog to know when it's finished.
     HANDLE finished_event_;
 #endif
 
     // Dump the stats table counters on exit.
     bool dump_stats_table_on_exit_;
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_H_