wstrings: convert CppVariant and CppBoundClass to not use wstring

webkit/tools/test_shell/accessibility_controller.h

 // Copyright (c) 2006-2009 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.
 
 #ifndef WEBKIT_TOOLS_TEST_SHELL_ACCESSIBILITY_CONTROLLER_H_
 #define WEBKIT_TOOLS_TEST_SHELL_ACCESSIBILITY_CONTROLLER_H_
 
 #include "webkit/glue/cpp_bound_class.h"
 #include "webkit/tools/test_shell/accessibility_ui_element.h"
 
 namespace WebKit {
 class WebAccessibilityObject;
 class WebFrame;
 }
 
 class AccessibilityUIElement;
 class AccessibilityUIElementList;
 class TestShell;
 
 class AccessibilityController : public CppBoundClass {
  public:
   explicit AccessibilityController(TestShell* shell);
 
   // shadow to include accessibility initialization.
-  void BindToJavascript(
-      WebKit::WebFrame* frame, const std::wstring& classname);
+  void BindToJavascript(WebKit::WebFrame* frame, const std::string& classname);
   void Reset();
 
   void SetFocusedElement(const WebKit::WebAccessibilityObject& focused_element);
   AccessibilityUIElement* GetFocusedElement();
   AccessibilityUIElement* GetRootElement();
 
  private:
   // Bound methods and properties
   void LogFocusEventsCallback(const CppArgumentList& args, CppVariant* result);
   void LogScrollingStartEventsCallback(
       const CppArgumentList& args, CppVariant* result);
   void FallbackCallback(const CppArgumentList& args, CppVariant* result);
 
   void FocusedElementGetterCallback(CppVariant* result);
   void RootElementGetterCallback(CppVariant* result);
 
   WebKit::WebAccessibilityObject focused_element_;
   WebKit::WebAccessibilityObject root_element_;
 
   AccessibilityUIElementList elements_;
 
   TestShell* shell_;
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_ACCESSIBILITY_CONTROLLER_H_