[runtime] Adding more detailed error message for Object::GetMethod.

test/mjsunit/messages.js

 // Copyright 2015 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: --stack-size=100 --harmony --harmony-reflect --harmony-regexps
 // Flags: --harmony-simd --strong-mode
 
 function test(f, expected, type) {
   try {
     f();
@@ skipping 238 matching lines @@
 
 // kPropertyDescObject
 test(function() {
   Object.defineProperty({}, "x", 1);
 }, "Property description must be an object: 1", TypeError);
 
 // kPropertyNotFunction
 test(function() {
   Set.prototype.add = 0;
   new Set(1);
-}, "Property 'add' of object #<Set> is not a function", TypeError);
+}, "'0' returned for property 'add' of object '#<Set>' is not a function", TypeError);
 
 // kProtoObjectOrNull
 test(function() {
   Object.setPrototypeOf({}, 1);
 }, "Object prototype may only be an Object or null: 1", TypeError);
 
 // kRedefineDisallowed
 test(function() {
   "use strict";
   var o = {};
@@ skipping 188 matching lines @@
   Number(1).toString(100);
 }, "toString() radix argument must be between 2 and 36", RangeError);
 
 
 // === URIError ===
 
 // kURIMalformed
 test(function() {
   decodeURI("%%");
 }, "URI malformed", URIError);