wstrings: convert CppVariant and CppBoundClass to not use wstring

webkit/glue/cpp_bound_class.h

 // 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.
 
 /*
   CppBoundClass class:
   This base class serves as a parent for C++ classes designed to be bound to
   JavaScript objects.
 
   Subclasses should define the constructor to build the property and method
@@ skipping 47 matching lines @@
   // The variant type is guaranteed to be NPVariantType_Object.
   CppVariant* GetAsCppVariant();
 
   // Given a WebFrame, BindToJavascript builds the NPObject that will represent
   // the class and binds it to the frame's window under the given name.  This
   // should generally be called from the WebView delegate's
   // WindowObjectCleared(). A class so bound will be accessible to JavaScript
   // as window.<classname>. The owner of the CppBoundObject is responsible for
   // keeping the object around while the frame is alive, and for destroying it
   // afterwards.
-  void BindToJavascript(
-      WebKit::WebFrame* frame, const std::wstring& classname);
+  void BindToJavascript(WebKit::WebFrame* frame, const std::string& classname);
 
   // The type of callbacks.
   typedef Callback2<const CppArgumentList&, CppVariant*>::Type Callback;
   typedef Callback1<CppVariant*>::Type GetterCallback;
 
   // Used by a test.  Returns true if a method with name |name| exists,
   // regardless of whether a fallback is registered.
   bool IsMethodRegistered(const std::string& name) const;
 
  protected:
@@ skipping 92 matching lines @@
   CppVariant self_variant_;
 
   // True if our np_object has been bound to a WebFrame, in which case it must
   // be unregistered with V8 when we delete it.
   bool bound_to_frame_;
 
   DISALLOW_COPY_AND_ASSIGN(CppBoundClass);
 };
 
 #endif  // CPP_BOUNDCLASS_H__