Reviewed by Adam.

    Reviewed by Adam.

        Don't use a JavaInstance to store the field when all we want to do is to keep the field
        from being garbage collected. Instead, use a JObjectWrapper.

        * bindings/jni/jni_instance.h:
        * bindings/jni/jni_runtime.cpp:
        (JavaField::JavaField):
        (JavaField::dispatchValueFromInstance):
        (JavaField::dispatchSetValueToInstance):
        * bindings/jni/jni_runtime.h:
        (KJS::Bindings::JavaField::JavaField):
        (KJS::Bindings::JavaField::operator=):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@22055 268f45cc-cd09-0410-ab3c-d52691b4dbfc