Switch to WebFrame from the WebKit API....

webkit/api/public/WebString.h

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 22 matching lines @@
 
 #include "WebCommon.h"
 
 #if WEBKIT_IMPLEMENTATION
 namespace WebCore { class String; class AtomicString; }
 #else
 #include <base/string16.h>
 #endif
 
 namespace WebKit {
-
+    class WebCString;
     class WebStringPrivate;
 
     // A UTF-16 string container.  It is inexpensive to copy a WebString
     // object.
     //
     // WARNING: It is not safe to pass a WebString across threads!!!
     //
     class WebString {
     public:
         ~WebString() { reset(); }
@@ skipping 16 matching lines @@
         WEBKIT_API void reset();
         WEBKIT_API void assign(const WebString&);
         WEBKIT_API void assign(const WebUChar* data, size_t len);
 
         WEBKIT_API size_t length() const;
         WEBKIT_API const WebUChar* data() const;
 
         bool isEmpty() const { return length() == 0; }
         bool isNull() const { return m_private == 0; }
 
+        WEBKIT_API WebCString utf8() const;
+
         WEBKIT_API static WebString fromUTF8(const char* data, size_t length);
         WEBKIT_API static WebString fromUTF8(const char* data);
 
 #if WEBKIT_IMPLEMENTATION
         WebString(const WebCore::String&);
         WebString& operator=(const WebCore::String&);
         operator WebCore::String() const;
         WebString(const WebCore::AtomicString&);
         WebString& operator=(const WebCore::AtomicString&);
         operator WebCore::AtomicString() const;
@@ skipping 23 matching lines @@
 #endif
 
     private:
         void assign(WebStringPrivate*);
         WebStringPrivate* m_private;
     };
 
 } // namespace WebKit
 
 #endif