Check in codegen test expectations.

test/codegen/expect/language/super_in_async1_test.js

+dart_library.library('language/super_in_async1_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__super_in_async1_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const async = dart_sdk.async;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const super_in_async1_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  super_in_async1_test.A = class A extends core.Object {
+    foo() {
+      return dart.async(function*() {
+        return 42;
+      }, core.int);
+    }
+  };
+  dart.setSignature(super_in_async1_test.A, {
+    methods: () => ({foo: dart.definiteFunctionType(async.Future$(core.int), [])})
+  });
+  const super$foo = Symbol("super$foo");
+  super_in_async1_test.B = class B extends super_in_async1_test.A {
+    foo() {
+      return dart.async((function*() {
+        let x = (yield this[super$foo]());
+        return dart.notNull(x) + 1;
+      }).bind(this), core.int);
+    }
+    [super$foo]() {
+      return super.foo();
+    }
+  };
+  super_in_async1_test.main = function() {
+    return dart.async(function*() {
+      expect$.Expect.equals(43, yield new super_in_async1_test.B().foo());
+    }, dart.dynamic);
+  };
+  dart.fn(super_in_async1_test.main, VoidTodynamic());
+  // Exports:
+  exports.super_in_async1_test = super_in_async1_test;
+});