DevTools: Async call stacks for window.postMessage()

Source/bindings/core/v8/ScriptFunctionCall.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 35 matching lines @@
     void appendArgument(const ScriptValue&);
     void appendArgument(const String&);
     void appendArgument(const char*);
     void appendArgument(long);
     void appendArgument(long long);
     void appendArgument(unsigned);
     void appendArgument(unsigned long);
     void appendArgument(int);
     void appendArgument(bool);
     void appendArgument(const Vector<ScriptValue>&);
+    void appendArgument(/* undefined */);
 
 protected:
     RefPtr<ScriptState> m_scriptState;
     Vector<ScriptValue> m_arguments;
 };
 
 class ScriptFunctionCall : public ScriptCallArgumentHandler {
 public:
     ScriptFunctionCall(const ScriptValue& thisObject, const String& name);
     ScriptValue call(bool& hadException, bool reportExceptions = true);
     ScriptValue call();
     ScriptValue construct(bool& hadException, bool reportExceptions = true);
 
 protected:
     ScriptValue m_thisObject;
     String m_name;
 };
 
 } // namespace blink
 
 #endif // ScriptFunctionCall