Re-enable PrefHashBrowserTest with a few more mitigations and cleanups.

Re-enable PrefHashBrowserTest with a few more mitigations and cleanups.

BUG=723639, 721245
Review-Url: https://codereview.chromium.org/2903933002
Cr-Commit-Position: refs/heads/master@{#474390}
Committed: https://chromium.googlesource.com/chromium/src/+/36b8552bced16b02fb080f98738087678accf273

[gab, 2017-05-24 18:43:48]

The CQ bit was checked by gab@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-05-24 18:44:21]

Dry run: CQ is trying da patch.

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

[gab, 2017-05-24 18:45:23]

gab@chromium.org changed reviewers:
+ proberge@chromium.org

[gab, 2017-05-24 18:45:23]

Pierre-Alexandre PTaL, thanks!

[proberge, 2017-05-24 18:58:23]

lgtm

[gab, 2017-05-24 19:22:33]

The CQ bit was unchecked by gab@chromium.org

[gab, 2017-05-24 19:22:36]

The CQ bit was checked by gab@chromium.org

[commit-bot: I haz the power, 2017-05-24 19:23:14]

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, 2017-05-24 19:30:50]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495653756200870, "parent_rev":
"ae0e0ee4a1b482fc86a7edcd371179c9cfd75d87", "commit_rev":
"36b8552bced16b02fb080f98738087678accf273"}

[commit-bot: I haz the power, 2017-05-24 19:31:05]

Description was changed from

==========
Re-enable PrefHashBrowserTest with a few more mitigations and cleanups.

BUG=723639, 721245
==========

to

==========
Re-enable PrefHashBrowserTest with a few more mitigations and cleanups.

BUG=723639, 721245

Review-Url: https://codereview.chromium.org/2903933002
Cr-Commit-Position: refs/heads/master@{#474390}
Committed:
https://chromium.googlesource.com/chromium/src/+/36b8552bced16b02fb080f987380...
==========

[commit-bot: I haz the power, 2017-05-24 19:31:05]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/36b8552bced16b02fb080f987380...