[proxy] fixing harmony/proxy.js tests and improving error messages + some drive-by fixes

test/mjsunit/es6/regress/regress-cr493566.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: --harmony-proxies
 
 "use strict";
 
 
 var global = this;
 
-
-(function TestGlobalReceiver() {
-  class A {
-    s() {
-      super.bla = 10;
-    }
-  }
-  new A().s.call(global);
-  assertEquals(10, global.bla);
-})();
-
-
-(function TestProxyProto() {
-  var calls = 0;
-  var handler = {
-    getPropertyDescriptor: function(name) {
-      calls++;
-      return undefined;
-    }
-  };
-
-  var target = {};
-  var proxy = new Proxy(target, handler);
-  var object = {
-    __proto__: proxy,
-    setX(v) {
-      super.x = v;
-    },
-    setSymbol(sym, v) {
-      super[sym] = v;
-    }
-  };
-
-  object.setX(1);
-  assertEquals(1, Object.getOwnPropertyDescriptor(object, 'x').value);
-  assertEquals(1, calls);
-
-  var sym = Symbol();
-  object.setSymbol.call(global, sym, 2);
-  assertEquals(2, Object.getOwnPropertyDescriptor(global, sym).value);
-  // We currently do not invoke proxy traps for symbols
-  assertEquals(1, calls);
-})();
-

[neis, 2015/12/10 15:13:49]

Not sure why I just deleted this.  Could you try to enable it?

-
 (function TestProxyReceiver() {
   var object = {
     setY(v) {
       super.y = v;
     }
   };
 
   var calls = 0;
   var handler = {
-    getPropertyDescriptor(name) {
+    getOwnPropertyDescriptor() {
       assertUnreachable();
     },
     set(receiver, name, value) {
       calls++;
       assertEquals(proxy, receiver);
       assertEquals('y', name);
       assertEquals(3, value);
     }
   };
 
   var proxy = new Proxy({}, handler);
   object.setY.call(proxy, 3);
   assertEquals(1, calls);
 })();