Revert "Resolve references to "this" the same way as normal variables"

test/mjsunit/harmony/arrow-functions-this.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-arrow-functions
-
-var object = {};
-var global = this;
-var call = Function.call.bind(Function.call);
-
-var globalSloppyArrow = () => this;
-var globalStrictArrow = () => { "use strict"; return this; };
-var globalSloppyArrowEval = (s) => eval(s);
-var globalStrictArrowEval = (s) => { "use strict"; return eval(s); };
-
-var sloppyFunctionArrow = function() {
-  return (() => this)();
-};
-var strictFunctionArrow = function() {
-  "use strict";
-  return (() => this)();
-};
-var sloppyFunctionEvalArrow = function() {
-  return eval("(() => this)()");
-};
-var strictFunctionEvalArrow = function() {
-  "use strict";
-  return eval("(() => this)()");
-};
-var sloppyFunctionArrowEval = function(s) {
-  return (() => eval(s))();
-};
-var strictFunctionArrowEval = function(s) {
-  "use strict";
-  return (() => eval(s))();
-};
-
-var withObject = { 'this': object }
-var arrowInsideWith, arrowInsideWithEval;
-with (withObject) {
-  arrowInsideWith = () => this;
-  arrowInsideWithEval = (s) => eval(s);
-}
-
-assertEquals(global, call(globalSloppyArrow, object));
-assertEquals(global, call(globalStrictArrow, object));
-assertEquals(global, call(globalSloppyArrowEval, object, "this"));
-assertEquals(global, call(globalStrictArrowEval, object, "this"));
-assertEquals(global, call(globalSloppyArrowEval, object, "(() => this)()"));
-assertEquals(global, call(globalStrictArrowEval, object, "(() => this)()"));
-
-assertEquals(object, call(sloppyFunctionArrow, object));
-assertEquals(global, call(sloppyFunctionArrow, undefined));
-assertEquals(object, call(strictFunctionArrow, object));
-assertEquals(undefined, call(strictFunctionArrow, undefined));
-
-assertEquals(object, call(sloppyFunctionEvalArrow, object));
-assertEquals(global, call(sloppyFunctionEvalArrow, undefined));
-assertEquals(object, call(strictFunctionEvalArrow, object));
-assertEquals(undefined, call(strictFunctionEvalArrow, undefined));
-
-assertEquals(object, call(sloppyFunctionArrowEval, object, "this"));
-assertEquals(global, call(sloppyFunctionArrowEval, undefined, "this"));
-assertEquals(object, call(strictFunctionArrowEval, object, "this"));
-assertEquals(undefined, call(strictFunctionArrowEval, undefined, "this"));
-
-assertEquals(object,
-             call(sloppyFunctionArrowEval, object, "(() => this)()"));
-assertEquals(global,
-             call(sloppyFunctionArrowEval, undefined, "(() => this)()"));
-assertEquals(object,
-             call(strictFunctionArrowEval, object, "(() => this)()"));
-assertEquals(undefined,
-             call(strictFunctionArrowEval, undefined, "(() => this)()"));
-
-assertEquals(global, call(arrowInsideWith, undefined));
-assertEquals(global, call(arrowInsideWith, object));
-assertEquals(global, call(arrowInsideWithEval, undefined, "this"));
-assertEquals(global, call(arrowInsideWithEval, object, "this"));
-assertEquals(global, call(arrowInsideWithEval, undefined, "(() => this)()"));
-assertEquals(global, call(arrowInsideWithEval, object, "(() => this)()"));