Mark new debugging stuff as flaky as it fails on mac/win/whatnot

Mark new debugging stuff as flaky as it fails on mac/win/whatnot

BUG=

Committed: https://github.com/dart-lang/sdk/commit/067b377a3c011cf630a15367f5d1d24a5519919e

[jensj, 2017-03-07 09:34:46]

jensj@google.com changed reviewers:
+ asgerf@google.com

[jensj, 2017-03-07 09:34:47]

tbr.

I will investigate further.

[jensj, 2017-03-07 09:34:59]

Description was changed from

==========
Mark new debugging stuff as flaky as it fails on mac/win/whatnot

BUG=
==========

to

==========
Mark new debugging stuff as flaky as it fails on mac/win/whatnot

BUG=

Committed:
https://github.com/dart-lang/sdk/commit/067b377a3c011cf630a15367f5d1d24a5519919e
==========

[jensj, 2017-03-07 09:35:00]

Committed patchset #1 (id:1) manually as
067b377a3c011cf630a15367f5d1d24a5519919e (presubmit successful).

[Cutch, 2017-03-07 17:19:10]

On 2017/03/07 09:35:00, jensj wrote:
> Committed patchset #1 (id:1) manually as
> 067b377a3c011cf630a15367f5d1d24a5519919e (presubmit successful).

Why are these tests flaky? Where is the bug explaining the cause?

[jensj, 2017-03-08 07:10:16]

It was revised in https://codereview.chromium.org/2734133003/.

Bugs reported are
https://github.com/dart-lang/sdk/issues/28978
https://github.com/dart-lang/sdk/issues/28975

On top of that (not reported as it isn't really a 'bug' per se) is that
snapshots doesn't include source and the generated source isn't 1-to-1 (messing
with expected column numbers).