Remove runtime flags for Proxy and Reflect

test/mjsunit/harmony/proxies-has.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
-
-var target = {
-  "target_one": 1
-};
-target.__proto__ = {
-  "target_two": 2
-};
-var handler = {
-  has: function(target, name) {
-    return name == "present";
-  }
-}
-
-var proxy = new Proxy(target, handler);
-
-// Test simple cases.
-assertTrue("present" in proxy);
-assertFalse("nonpresent" in proxy);
-
-// Test interesting algorithm steps:
-
-// Step 7: Fall through to target if trap is undefined.
-handler.has = undefined;
-assertTrue("target_one" in proxy);
-assertTrue("target_two" in proxy);
-assertFalse("in_your_dreams" in proxy);
-
-// Step 8: Result is converted to boolean.
-var result = 1;
-handler.has = function(t, n) { return result; }
-assertTrue("foo" in proxy);
-result = {};
-assertTrue("foo" in proxy);
-result = undefined;
-assertFalse("foo" in proxy);
-result = "string";
-assertTrue("foo" in proxy);
-
-// Step 9b i. Trap result must confirm presence of non-configurable properties
-// of the target.
-Object.defineProperty(target, "nonconf", {value: 1, configurable: false});
-result = false;
-assertThrows("'nonconf' in proxy", TypeError);
-
-// Step 9b iii. Trap result must confirm presence of all own properties of
-// non-extensible targets.
-Object.preventExtensions(target);
-assertThrows("'nonconf' in proxy", TypeError);
-assertThrows("'target_one' in proxy", TypeError);
-assertFalse("target_two" in proxy);
-assertFalse("in_your_dreams" in proxy);
-
-// Regression test for crbug.com/570120 (stray JSObject::cast).
-(function TestHasPropertyFastPath() {
-  var proxy = new Proxy({}, {});
-  var object = Object.create(proxy);
-  object.hasOwnProperty(0);
-})();