Make error producing tests ansynchronous.

Make error producing tests ansynchronous.

This is another preliminary test to run these tests with the new
analysis driver. Especially when we're going to replace the task based
analysis implementation with another one.

R=brianwilkerson@google.com
BUG=

Committed: https://github.com/dart-lang/sdk/commit/5a3afed30f367843bc0c72fe25e77c9205d7649f

[Brian Wilkerson, 2017-01-10 18:02:40]

lgtm

https://codereview.chromium.org/2624793002/diff/1/pkg/analyzer/test/generated...
File pkg/analyzer/test/generated/all_the_rest_test.dart (right):

https://codereview.chromium.org/2624793002/diff/1/pkg/analyzer/test/generated...
pkg/analyzer/test/generated/all_the_rest_test.dart:98: test_setContents() async
{
Not sure there's value in making methods async if they don't use any async
features, but maybe that's coming in a future CL.

[scheglov, 2017-01-10 18:33:53]

Description was changed from

==========
Make error producing tests ansynchronous.

This is another preliminary test to run these tests with the new
analysis driver. Especially when we're going to replace the task based
analysis implementation with another one.

R=brianwilkerson@google.com
BUG=
==========

to

==========
Make error producing tests ansynchronous.

This is another preliminary test to run these tests with the new
analysis driver. Especially when we're going to replace the task based
analysis implementation with another one.

R=brianwilkerson@google.com
BUG=

Committed:
https://github.com/dart-lang/sdk/commit/5a3afed30f367843bc0c72fe25e77c9205d7649f
==========

[scheglov, 2017-01-10 18:33:54]

Committed patchset #1 (id:1) manually as
5a3afed30f367843bc0c72fe25e77c9205d7649f (presubmit successful).