[strong] Remove all remainders of strong mode

test/mjsunit/strong/load-proxy.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 --strong-mode
-
-// Forwarding proxies adapted from proposal definition
-function handlerMaker1(obj) {
-  return {
-    getPropertyDescriptor: function(name) {
-      var desc;
-      var searchObj = obj;
-      while (desc === undefined && searchObj != null) {
-        desc = Object.getOwnPropertyDescriptor(searchObj, name);
-        searchObj = searchObj.__proto__;
-      }
-      // a trapping proxy's properties must always be configurable
-      if (desc !== undefined) { desc.configurable = true; }
-      return desc;
-    },
-    fix: function() {
-      if (Object.isFrozen(obj)) {
-        var result = {};
-        Object.getOwnPropertyNames(obj).forEach(function(name) {
-          result[name] = Object.getOwnPropertyDescriptor(obj, name);
-        });
-        return result;
-      }
-      // As long as obj is not frozen, the proxy won't allow itself to be fixed
-      return undefined; // will cause a TypeError to be thrown
-    }
-  };
-}
-function handlerMaker2(obj) {
-  return {
-    get: function(receiver, name) {
-      return obj[name];
-    },
-    fix: function() {
-      if (Object.isFrozen(obj)) {
-        var result = {};
-        Object.getOwnPropertyNames(obj).forEach(function(name) {
-          result[name] = Object.getOwnPropertyDescriptor(obj, name);
-        });
-        return result;
-      }
-      // As long as obj is not frozen, the proxy won't allow itself to be fixed
-      return undefined; // will cause a TypeError to be thrown
-    }
-  };
-}
-var baseObj = {};
-var proxy1 = new Proxy({}, handlerMaker1(baseObj));
-var proxy2 = new Proxy({}, handlerMaker2(baseObj));
-var childObj1 = { __proto__: proxy1 };
-var childObj2 = { __proto__: proxy2 };
-var childObjAccessor1 = { set foo(_){}, set "1"(_){}, __proto__: proxy1 };
-var childObjAccessor2 = { set foo(_){}, set "1"(_){}, __proto__: proxy2 };
-
-(function() {
-  "use strong";
-  // TODO(conradw): These asserts are sanity checking V8's proxy implementation.
-  // Strong mode semantics for ES6 proxies still need to be explored.
-  assertDoesNotThrow(function(){proxy1.foo});
-  assertDoesNotThrow(function(){proxy1[1]});
-  assertDoesNotThrow(function(){proxy2.foo});
-  assertDoesNotThrow(function(){proxy2[1]});
-  assertDoesNotThrow(function(){childObj1.foo});
-  assertDoesNotThrow(function(){childObj1[1]});
-  assertDoesNotThrow(function(){childObj2.foo});
-  assertDoesNotThrow(function(){childObj2[1]});
-  assertThrows(function(){baseObj.foo}, TypeError);
-  assertThrows(function(){baseObj[1]}, TypeError);
-  assertThrows(function(){childObjAccessor1.foo}, TypeError);
-  assertThrows(function(){childObjAccessor1[1]}, TypeError);
-  assertThrows(function(){childObjAccessor2.foo}, TypeError);
-  assertThrows(function(){childObjAccessor2[1]}, TypeError);
-
-  // Once the proxy is no longer trapping, property access should have strong
-  // semantics.
-  Object.freeze(baseObj);
-
-  // TODO(neis): Reenable once proxies properly support freeze.
-  //
-  // Object.freeze(proxy1);
-  // assertThrows(function(){proxy1.foo}, TypeError);
-  // assertThrows(function(){proxy1[1]}, TypeError);
-  // assertThrows(function(){childObj1.foo}, TypeError);
-  // assertThrows(function(){childObj1[1]}, TypeError);
-  // assertThrows(function(){childObjAccessor1.foo}, TypeError);
-  // assertThrows(function(){childObjAccessor1[1]}, TypeError);
-  //
-  // Object.freeze(proxy2);
-  // assertThrows(function(){proxy2.foo}, TypeError);
-  // assertThrows(function(){proxy2[1]}, TypeError);
-  // assertThrows(function(){childObj2.foo}, TypeError);
-  // assertThrows(function(){childObj2[1]}, TypeError);
-  // assertThrows(function(){childObjAccessor2.foo}, TypeError);
-  // assertThrows(function(){childObjAccessor2[1]}, TypeError);
-})();