Remove unused base/memory/singleton_objc.h

Remove unused base/memory/singleton_objc.h

BUG=661774
Review-Url: https://codereview.chromium.org/2777753002
Cr-Commit-Position: refs/heads/master@{#459667}
Committed: https://chromium.googlesource.com/chromium/src/+/42366da1ac6b2186e0569751941fd1a5a995801c

[Nico, 2017-03-26 01:59:55]

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

[commit-bot: I haz the power, 2017-03-26 02:00:03]

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

[Nico, 2017-03-26 02:00:32]

thakis@chromium.org changed reviewers:
+ mark@chromium.org

[commit-bot: I haz the power, 2017-03-26 02:08:42]

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

[commit-bot: I haz the power, 2017-03-26 02:08:42]

Dry run: This issue passed the CQ dry run.

[Mark Mentovai, 2017-03-26 02:17:45]

LGTM

[Nico, 2017-03-26 03:03:00]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2017-03-26 03:03:18]

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, 2017-03-26 03:07:01]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490497380951950, "parent_rev":
"c7749ac462ce8f82dba45a456d8aab291d281b1c", "commit_rev":
"42366da1ac6b2186e0569751941fd1a5a995801c"}

[commit-bot: I haz the power, 2017-03-26 03:07:50]

Description was changed from

==========
Remove unused base/memory/singleton_objc.h

BUG=661774
==========

to

==========
Remove unused base/memory/singleton_objc.h

BUG=661774

Review-Url: https://codereview.chromium.org/2777753002
Cr-Commit-Position: refs/heads/master@{#459667}
Committed:
https://chromium.googlesource.com/chromium/src/+/42366da1ac6b2186e0569751941f...
==========

[commit-bot: I haz the power, 2017-03-26 03:07:51]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/42366da1ac6b2186e0569751941f...