Check in codegen test expectations.

test/codegen/expect/language/import_self_test_none_multi.js

+dart_library.library('language/import_self_test_none_multi', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__import_self_test_none_multi(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 import_self_test_none_multi = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  import_self_test_none_multi._x = "The quick brown fox jumps over the dazy log";
+  import_self_test_none_multi.main = function() {
+    let t = "Falsches Üben von Xylophonmusik quält jeden größeren Zwerg";
+    expect$.Expect.isTrue(t[dartx.endsWith]("Zwerg"));
+  };
+  dart.fn(import_self_test_none_multi.main, VoidTodynamic());
+  // Exports:
+  exports.import_self_test_none_multi = import_self_test_none_multi;
+});