X11: Wait for UnmapNotify before trying to remap

X11: Wait for UnmapNotify before trying to remap

A speculative fix for a suspected race condition in which we wait for a
MapNotify that will never come.

BUG=381732
Committed: https://crrev.com/89f356e5bb13b81624a432a149d18e75694676c9
Cr-Commit-Position: refs/heads/master@{#399484}

[Tom (Use chromium acct), 2016-06-10 19:29:40]

The CQ bit was checked by thomasanderson@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-06-10 19:30:03]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2057333002/1

[Tom (Use chromium acct), 2016-06-10 19:30:04]

thomasanderson@google.com changed reviewers:
+ danakj@chromium.org, erg@chromium.org, sadrul@chromium.org

[Elliot Glaysher, 2016-06-10 19:46:11]

lgtm

I like how you don't block waiting for an unmap until the next map.

[commit-bot: I haz the power, 2016-06-10 20:17:38]

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

[commit-bot: I haz the power, 2016-06-10 20:17:39]

Dry run: This issue passed the CQ dry run.

[sadrul, 2016-06-13 15:33:46]

It would be nice to finally add some test coverage for all of this. lgtm

[Tom (Use chromium acct), 2016-06-13 17:19:16]

The CQ bit was checked by thomasanderson@google.com

[commit-bot: I haz the power, 2016-06-13 17:19:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2057333002/1

[commit-bot: I haz the power, 2016-06-13 18:11:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-13 18:13:19]

Description was changed from

==========
X11: Wait for UnmapNotify before trying to remap

A speculative fix for a suspected race condition in which we wait for a
MapNotify that will never come.

BUG=381732
==========

to

==========
X11: Wait for UnmapNotify before trying to remap

A speculative fix for a suspected race condition in which we wait for a
MapNotify that will never come.

BUG=381732

Committed: https://crrev.com/89f356e5bb13b81624a432a149d18e75694676c9
Cr-Commit-Position: refs/heads/master@{#399484}
==========

[commit-bot: I haz the power, 2016-06-13 18:13:20]

Patchset 1 (id:??) landed as
https://crrev.com/89f356e5bb13b81624a432a149d18e75694676c9
Cr-Commit-Position: refs/heads/master@{#399484}