Remove Function.prototype.toMethod

test/mjsunit/harmony/super.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-classes
+// Flags: --harmony-classes --allow-natives-syntax
 
 (function TestSuperNamedLoads() {
   function Base() { }
   function fBase() { }
   Base.prototype = {
     f() {
       return "Base " + this.toString();
     },
     x: 15,
     toString() {
@@ skipping 17 matching lines @@
       return "Derived";
     }
   };
 
   assertEquals("Base this is Base", new Base().f());
   assertEquals("Derived", new Derived().f());
 }());
 
 
 (function TestSuperKeyedLoads() {
+  'use strict';
+
   var x = 'x';
   var derivedDataProperty = 'derivedDataProperty';
   var f = 'f';
 
-  function Base() { }
-  function fBase() { return "Base " + this.toString(); }
-  Base.prototype[f] = fBase.toMethod(Base.prototype);
+  class Base {
+    f() {
+      return "Base " + this.toString();
+    }
+    toString() {
+      return "this is Base";
+    }
+  }
+
   Base.prototype[x] = 15;
-  Base.prototype.toString = function() { return "this is Base"; };
 
   function Derived() {
     this[derivedDataProperty] = "xxx";
   }
   Derived.prototype = {
     __proto__: Base.prototype,
     toString() { return "this is Derived"; },
     x: 27,
     f() {
       assertEquals("Base this is Derived", super[f]());
@@ skipping 10 matching lines @@
 }());
 
 
 (function TestSuperNumericKeyedLoads() {
   var x = 1;
   var derivedDataProperty = 2;
   var f = 3;
 
   function Base() { }
   function fBase() { return "Base " + this.toString(); }
-  Base.prototype[f] = fBase.toMethod(Base.prototype);
+  Base.prototype[f] = %ToMethod(fBase, Base.prototype);
   Base.prototype[x] = 15;
   Base.prototype.toString = function() { return "this is Base"; };
 
   function Derived() {
     this[derivedDataProperty] = "xxx";
   }
   Derived.prototype = {
     __proto__: Base.prototype,
     toString() { return "this is Derived"; },
     1: 27,
@@ skipping 1822 matching lines @@
 
   class C3 {
     constructor() {
       ; 'use strict';;;;;
       // This is a comment.
       super();
     }
   }
   new C3();
 }());