Make MessageLoopRunner be RefCountedThreadSafe

Make MessageLoopRunner be RefCountedThreadSafe

MessageLoopRunner has a non-thread-safe ref count and is used from
multiple threads in tests.

Review-Url: https://codereview.chromium.org/2686873003
Cr-Commit-Position: refs/heads/master@{#449235}
Committed: https://chromium.googlesource.com/chromium/src/+/0c4ab45b18a9e054f9135d0c2cf74f7d1bb77a97

[tzik, 2017-02-09 06:41:28]

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

[commit-bot: I haz the power, 2017-02-09 06:41:55]

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

[tzik, 2017-02-09 06:49:40]

Description was changed from

==========
Make MassegLoopRunner be RefCountedThreadSafe
==========

to

==========
Make MessageLoopRunner be RefCountedThreadSafe

MessageLoopRunner has a non-thread-safe ref count and is used from
multiple threads in tests.
==========

[tzik, 2017-02-09 06:50:16]

tzik@chromium.org changed reviewers:
+ kinuko@chromium.org

[tzik, 2017-02-09 06:50:17]

PTAL

[kinuko, 2017-02-09 07:13:05]

Is this one still used a lot?  (Did code search--> looks like it is. :( )

lgtm

[tzik, 2017-02-09 07:23:32]

The CQ bit was unchecked by tzik@chromium.org

[tzik, 2017-02-09 07:57:03]

The CQ bit was checked by tzik@chromium.org

[commit-bot: I haz the power, 2017-02-09 07:57:29]

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, 2017-02-09 08:34:49]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486627023875770, "parent_rev":
"a3e535d03af38a89346b26ae68ec9adece65c1de", "commit_rev":
"0c4ab45b18a9e054f9135d0c2cf74f7d1bb77a97"}

[commit-bot: I haz the power, 2017-02-09 08:35:30]

Description was changed from

==========
Make MessageLoopRunner be RefCountedThreadSafe

MessageLoopRunner has a non-thread-safe ref count and is used from
multiple threads in tests.
==========

to

==========
Make MessageLoopRunner be RefCountedThreadSafe

MessageLoopRunner has a non-thread-safe ref count and is used from
multiple threads in tests.

Review-Url: https://codereview.chromium.org/2686873003
Cr-Commit-Position: refs/heads/master@{#449235}
Committed:
https://chromium.googlesource.com/chromium/src/+/0c4ab45b18a9e054f9135d0c2cf7...
==========

[commit-bot: I haz the power, 2017-02-09 08:35:30]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/0c4ab45b18a9e054f9135d0c2cf7...