--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/PrototypeObject.java	2020-04-15 18:50:02.000000000 +0530
+++ /dev/null	2020-04-15 18:50:02.000000000 +0530
@@ -1,118 +0,0 @@
-/*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package jdk.nashorn.internal.runtime;
-
-import static jdk.nashorn.internal.lookup.Lookup.MH;
-import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
-
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-import java.util.ArrayList;
-import jdk.nashorn.internal.objects.Global;
-
-/**
- * Instances of this class serve as "prototype" object for script functions.
- * The purpose is to expose "constructor" property from "prototype". Also, nasgen
- * generated prototype classes extend from this class.
- */
-public class PrototypeObject extends ScriptObject {
-    private static final PropertyMap map$;
-
-    private Object constructor;
-
-    private static final MethodHandle GET_CONSTRUCTOR = findOwnMH("getConstructor", Object.class, Object.class);
-    private static final MethodHandle SET_CONSTRUCTOR = findOwnMH("setConstructor", void.class, Object.class, Object.class);
-
-    static {
-        final ArrayList<Property> properties = new ArrayList<>(1);
-        properties.add(AccessorProperty.create("constructor", Property.NOT_ENUMERABLE, GET_CONSTRUCTOR, SET_CONSTRUCTOR));
-        map$ = PropertyMap.newMap(properties);
-    }
-
-    private PrototypeObject(final Global global, final PropertyMap map) {
-        super(global.getObjectPrototype(), map != map$? map.addAll(map$) : map$);
-    }
-
-    /**
-     * Prototype constructor
-     */
-    protected PrototypeObject() {
-        this(Global.instance(), map$);
-    }
-
-    /**
-     * PropertyObject constructor
-     *
-     * @param map property map
-     */
-    protected PrototypeObject(final PropertyMap map) {
-        this(Global.instance(), map);
-    }
-
-    /**
-     * PropertyObject constructor
-     *
-     * @param func constructor function
-     */
-    protected PrototypeObject(final ScriptFunction func) {
-        this(Global.instance(), map$);
-        this.constructor = func;
-    }
-
-    /**
-     * Get the constructor for this {@code PrototypeObject}
-     * @param self self reference
-     * @return constructor, probably, but not necessarily, a {@link ScriptFunction}
-     */
-    public static Object getConstructor(final Object self) {
-        return (self instanceof PrototypeObject) ?
-            ((PrototypeObject)self).getConstructor() :
-            UNDEFINED;
-    }
-
-    /**
-     * Reset the constructor for this {@code PrototypeObject}
-     * @param self self reference
-     * @param constructor constructor, probably, but not necessarily, a {@link ScriptFunction}
-     */
-    public static void setConstructor(final Object self, final Object constructor) {
-        if (self instanceof PrototypeObject) {
-            ((PrototypeObject)self).setConstructor(constructor);
-        }
-    }
-
-    private Object getConstructor() {
-        return constructor;
-    }
-
-    private void setConstructor(final Object constructor) {
-        this.constructor = constructor;
-    }
-
-    private static MethodHandle findOwnMH(final String name, final Class<?> rtype, final Class<?>... types) {
-        return MH.findStatic(MethodHandles.lookup(), PrototypeObject.class, name, MH.type(rtype, types));
-    }
-}