Reviewed by Geoffrey Garen.

        Make Instance::createRuntimeObject a virtual function and override it for QtInstance.
        
        * bindings/js/JSPluginElementFunctions.cpp:
        (WebCore::getRuntimeObject):
        * bridge/c/c_utility.cpp:
        (JSC::Bindings::convertNPVariantToValue):
        * bridge/jni/jni_instance.cpp:
        (JavaInstance::invokeMethod):
        * bridge/jni/jni_jsobject.mm:
        (JavaJSObject::convertJObjectToValue):
        * bridge/jni/jni_runtime.cpp:
        (JavaField::valueFromInstance):
        (JavaArray::valueAt):
        * bridge/objc/objc_utility.mm:
        (JSC::Bindings::convertObjcValueToValue):
        * bridge/qt/qt_instance.cpp:
        (JSC::Bindings::QtInstance::getRuntimeObject):
        (JSC::Bindings::QtInstance::createRuntimeObject):
        * bridge/qt/qt_instance.h:
        * bridge/qt/qt_runtime.cpp:
        (JSC::Bindings::convertQVariantToValue):
        (JSC::Bindings::QtConnectionObject::execute):
        * bridge/runtime.cpp:
        (JSC::Bindings::Instance::createRuntimeObject):
        * bridge/runtime.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@39946 268f45cc-cd09-0410-ab3c-d52691b4dbfc