Remove code to support Objective-C bindings

Source/core/page/DOMWindow.cpp

Index: Source/core/page/DOMWindow.cpp
diff --git a/Source/core/page/DOMWindow.cpp b/Source/core/page/DOMWindow.cpp
index 0036083251d87dbedbbc726e5150078ee73979c4..3e22c21ea68379093a7715376961df422f9d4fa2 100644
--- a/Source/core/page/DOMWindow.cpp
+++ b/Source/core/page/DOMWindow.cpp
@@ -754,14 +754,6 @@ Storage* DOMWindow::localStorage(ExceptionCode& ec) const
     return m_localStorage.get();
 }
 
-void DOMWindow::postMessage(PassRefPtr<SerializedScriptValue> message, MessagePort* port, const String& targetOrigin, DOMWindow* source, ExceptionCode& ec)
-{
-    MessagePortArray ports;
-    if (port)
-        ports.append(port);
-    postMessage(message, &ports, targetOrigin, source, ec);
-}
-
 void DOMWindow::postMessage(PassRefPtr<SerializedScriptValue> message, const MessagePortArray* ports, const String& targetOrigin, DOMWindow* source, ExceptionCode& ec)
 {
     if (!isCurrentlyDisplayedInFrame())