[Swarming] Set up sanitizer environment in v8 test runner.

[Swarming] Set up sanitizer environment in v8 test runner.

This is currently hardcoded in the infra-side test runner
setup, but will be removed there, so that swarming triggers
don't need a custom environment.

BUG=chromium:535160
LOG=n

Committed: https://crrev.com/b1f00106c2e56343714140e54d22f80f01d36262
Cr-Commit-Position: refs/heads/master@{#31682}

[Michael Achenbach, 2015-10-30 10:01:44]

Description was changed from

==========
[Swarming] Set up sanitizer environment in v8 test runner.

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

to

==========
[Swarming] Set up sanitizer environment in v8 test runner.

This is currently hardcoded in the infra-side test runner
setup, but will be removed there, so that swarming triggers
don't need a custom environment.

BUG=chromium:535160
LOG=n
==========

[Michael Achenbach, 2015-10-30 10:01:44]

machenbach@chromium.org changed reviewers:
+ jkummerow@chromium.org, tandrii@chromium.org

[Michael Achenbach, 2015-10-30 10:06:09]

PTAL

[Jakob Kummerow, 2015-10-30 10:17:43]

lgtm

[Michael Achenbach, 2015-10-30 10:24:52]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2015-10-30 10:25:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1411733008/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1411733008/40001

[commit-bot: I haz the power, 2015-10-30 11:08:18]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-10-30 11:08:40]

Patchset 3 (id:??) landed as
https://crrev.com/b1f00106c2e56343714140e54d22f80f01d36262
Cr-Commit-Position: refs/heads/master@{#31682}