Check in codegen test expectations.

test/codegen/expect/language/unnamed_closure_test.js

+dart_library.library('language/unnamed_closure_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__unnamed_closure_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const unnamed_closure_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  unnamed_closure_test.getNonArray = function() {
+    return new unnamed_closure_test.A();
+  };
+  dart.fn(unnamed_closure_test.getNonArray, VoidTodynamic());
+  unnamed_closure_test.A = class A extends core.Object {
+    get(index) {
+      return index;
+    }
+  };
+  dart.setSignature(unnamed_closure_test.A, {
+    methods: () => ({get: dart.definiteFunctionType(dart.dynamic, [dart.dynamic])})
+  });
+  unnamed_closure_test.main = function() {
+    expect$.Expect.equals(42, dart.fn(() => {
+      let res = null;
+      do {
+        let a = unnamed_closure_test.getNonArray();
+        res = dart.dindex(a, 42);
+      } while (false);
+      return res;
+    }, VoidTodynamic())());
+  };
+  dart.fn(unnamed_closure_test.main, VoidTodynamic());
+  // Exports:
+  exports.unnamed_closure_test = unnamed_closure_test;
+});