Fix crash where a pending pointer lock would trigger a CHECK.

Fix crash where a pending pointer lock would trigger a CHECK.

This change makes sure that we gracefully handle the case where a
pending pointer lock request is still active while destroying the
RenderWidgetHost.

BUG=655592
Committed: https://crrev.com/ff8dfc8dad9f98b4022c1108335820204fee3c70
Cr-Commit-Position: refs/heads/master@{#426835}

[lfg, 2016-10-20 21:10:36]

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

[commit-bot: I haz the power, 2016-10-20 21:11:12]

Dry run: 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, 2016-10-20 21:36:35]

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

[commit-bot: I haz the power, 2016-10-20 21:36:35]

Dry run: Try jobs failed on following builders:
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[lfg, 2016-10-20 21:40:08]

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

[commit-bot: I haz the power, 2016-10-20 21:40:43]

Dry run: 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, 2016-10-20 21:58:11]

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

[commit-bot: I haz the power, 2016-10-20 21:58:12]

Dry run: Try jobs failed on following builders:
  mac_chromium_compile_dbg_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)

[lfg, 2016-10-20 22:11:06]

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

[commit-bot: I haz the power, 2016-10-20 22:11:47]

Dry run: 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, 2016-10-20 23:48:55]

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

[commit-bot: I haz the power, 2016-10-20 23:48:56]

Dry run: This issue passed the CQ dry run.

[lfg, 2016-10-21 15:14:04]

lfg@chromium.org changed reviewers:
+ nick@chromium.org

[lfg, 2016-10-21 15:14:05]

Nick, can you take a look?

[ncarter (slow), 2016-10-21 17:21:17]

The CQ bit was checked by nick@chromium.org

[ncarter (slow), 2016-10-21 17:21:18]

lgtm

[commit-bot: I haz the power, 2016-10-21 17:21:36]

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, 2016-10-21 17:42:55]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2016-10-21 18:06:46]

Description was changed from

==========
Fix crash where a pending pointer lock would trigger a CHECK.

This change makes sure that we gracefully handle the case where a
pending pointer lock request is still active while destroying the
RenderWidgetHost.


BUG=655592
==========

to

==========
Fix crash where a pending pointer lock would trigger a CHECK.

This change makes sure that we gracefully handle the case where a
pending pointer lock request is still active while destroying the
RenderWidgetHost.

BUG=655592

Committed: https://crrev.com/ff8dfc8dad9f98b4022c1108335820204fee3c70
Cr-Commit-Position: refs/heads/master@{#426835}
==========

[commit-bot: I haz the power, 2016-10-21 18:06:47]

Patchset 3 (id:??) landed as
https://crrev.com/ff8dfc8dad9f98b4022c1108335820204fee3c70
Cr-Commit-Position: refs/heads/master@{#426835}