Check in codegen test expectations.

test/codegen/expect/language/closure_in_field_initializer_test.js

+dart_library.library('language/closure_in_field_initializer_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__closure_in_field_initializer_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 closure_in_field_initializer_test = Object.create(null);
+  let dynamicAnddynamicTodynamic = () => (dynamicAnddynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic, dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  closure_in_field_initializer_test.Foo = class Foo extends core.Object {
+    new() {
+      this.closures = dart.map({a: dart.fn((x, y) => dart.dsend(x, '+', y), dynamicAnddynamicTodynamic())});
+    }
+  };
+  closure_in_field_initializer_test.main = function() {
+    let closures = new closure_in_field_initializer_test.Foo().closures;
+    expect$.Expect.equals(6, dart.dcall(closures[dartx.get]('a'), 4, 2));
+  };
+  dart.fn(closure_in_field_initializer_test.main, VoidTodynamic());
+  // Exports:
+  exports.closure_in_field_initializer_test = closure_in_field_initializer_test;
+});