Add test for order of operations in "var" stmnt

test/language/statements/variable/binding-resolution.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-variable-statement-runtime-semantics-evaluation
+es6id: 13.3.2.4
+description: Binding is resolve prior to evaluation of Initializer
+info: |
+   VariableDeclaration : BindingIdentifier Initializer
+
+   1. Let bindingId be StringValue of BindingIdentifier.
+   2. Let lhs be ? ResolveBinding(bindingId).
+   3. Let rhs be the result of evaluating Initializer.
+   [...]
+flags: [noStrict]
+---*/
+
+var obj = { test262id: 1 };
+
+with (obj) {
+  var test262id = delete obj.test262id;
+}
+
+assert.sameValue(obj.test262id, true);
+assert.sameValue(test262id, undefined);