Switch to dartgenerator.py for C++ callbacks generation.

Source/WebCore/bindings/dart/DartCallback.h

 /*
  * Copyright (C) 2006-2011 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 26 matching lines @@
 #include <dart_api.h>
 
 namespace WebCore {
 
 class DartCallback {
 public:
     DartCallback(Dart_Handle object, Dart_Handle& exception);
 
     ~DartCallback();
 
+    bool handleEvent()
+    {
+        DartIsolateState::Scope scope(m_isolate);
+        DartApiScope apiScope;
+
+        return handleEventInternal(0, 0);
+    }
+
     template <class WebKitType>
     bool handleEvent(WebKitType argument)
     {
         DartIsolateState::Scope scope(m_isolate);
         DartApiScope apiScope;
 
         Dart_Handle arguments[] = {
             toDartValue(argument)
         };
         return handleEventInternal(arguments, 1);
@@ skipping 29 matching lines @@
 private:
     bool handleEventInternal(Dart_Handle* argv, int argc);
 
     Dart_Isolate m_isolate;
     Dart_Handle m_callback;
 };
 
 }
 
 #endif // DartCallback_h