[Android] Revise SIGTERM and unknown test result handling.

[Android] Revise SIGTERM and unknown test result handling.

Currently, the test runner only takes action on SIGTERM on test execution
threads and only stops at the end of a test shard. In some cases, this isn't
fast enough. This CL makes the main thread drop test execution.

This CL also tweaks the handling of test results to better handle UNKNOWNs.

BUG=

Committed: https://crrev.com/6c04fde85a18fc3bc8498f9735b984beaf8209c7
Cr-Commit-Position: refs/heads/master@{#404507}

[jbudorick, 2016-07-08 00:26:55]

jbudorick@chromium.org changed reviewers:
+ rnephew@chromium.org

[rnephew (Reviews Here), 2016-07-08 21:07:44]

On 2016/07/08 00:26:55, jbudorick wrote:

lgtm

[jbudorick, 2016-07-08 21:09:02]

The CQ bit was checked by jbudorick@chromium.org

[commit-bot: I haz the power, 2016-07-08 21:09:41]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-08 22:16:08]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-07-08 22:16:14]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-08 22:17:32]

Description was changed from

==========
[Android] Revise SIGTERM and unknown test result handling.

Currently, the test runner only takes action on SIGTERM on test execution
threads and only stops at the end of a test shard. In some cases, this isn't
fast enough. This CL makes the main thread drop test execution.

This CL also tweaks the handling of test results to better handle UNKNOWNs.

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

to

==========
[Android] Revise SIGTERM and unknown test result handling.

Currently, the test runner only takes action on SIGTERM on test execution
threads and only stops at the end of a test shard. In some cases, this isn't
fast enough. This CL makes the main thread drop test execution.

This CL also tweaks the handling of test results to better handle UNKNOWNs.

BUG=

Committed: https://crrev.com/6c04fde85a18fc3bc8498f9735b984beaf8209c7
Cr-Commit-Position: refs/heads/master@{#404507}
==========

[commit-bot: I haz the power, 2016-07-08 22:17:33]

Patchset 2 (id:??) landed as
https://crrev.com/6c04fde85a18fc3bc8498f9735b984beaf8209c7
Cr-Commit-Position: refs/heads/master@{#404507}