Add regression test for 507979.

Add regression test for issue 507979.

Regression test for CL 3eb91e8aec8e628adc1046fca16c5dfd1d129118.

BUG=chromium:507979
LOG=N

Committed: https://crrev.com/05aedb7738d6c6985517d55ce292bf2f439fc73c
Cr-Commit-Position: refs/heads/master@{#29873}

[Michael Lippautz, 2015-07-27 12:55:53]

mlippautz@chromium.org changed reviewers:
+ hpayer@chromium.org

[Michael Lippautz, 2015-07-27 12:55:53]

deterministic repro case for clusterfuzz issue in 507979.

[Hannes Payer (out of office), 2015-07-27 13:00:52]

lgtm

[Michael Lippautz, 2015-07-27 13:01:30]

The CQ bit was checked by mlippautz@chromium.org

[commit-bot: I haz the power, 2015-07-27 13:01:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1255173002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1255173002/1

[commit-bot: I haz the power, 2015-07-27 13:07:04]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-07-27 13:07:04]

Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/4477)

[Michael Lippautz, 2015-07-27 13:15:27]

The CQ bit was checked by mlippautz@chromium.org

[commit-bot: I haz the power, 2015-07-27 13:15:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1255173002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1255173002/1

[commit-bot: I haz the power, 2015-07-27 13:29:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-27 13:29:39]

Patchset 1 (id:??) landed as
https://crrev.com/05aedb7738d6c6985517d55ce292bf2f439fc73c
Cr-Commit-Position: refs/heads/master@{#29873}