[mojo-edk] Shutdown a node's bootstrap parent channel outside its lock.

[mojo-edk] Shutdown a node's bootstrap parent channel outside its lock.

On OSX, NodeChannel::ShutDown() calls into
NodeController::GetMachPortRelay() which acquires |parent_lock_| and
deadlocks due to a recursuve lock acquisition.

BUG=582468
Committed: https://crrev.com/86045e737391ccffa0383eaa51c6c2bc858fa0ca
Cr-Commit-Position: refs/heads/master@{#381852}

[Anand Mistry (off Chromium), 2016-03-17 17:20:37]

amistry@chromium.org changed reviewers:
+ rockot@chromium.org

[Ken Rockot(use gerrit already), 2016-03-18 00:06:06]

lgtm

[Anand Mistry (off Chromium), 2016-03-18 00:11:06]

The CQ bit was checked by amistry@chromium.org

[commit-bot: I haz the power, 2016-03-18 00:11:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1808233003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1808233003/1

[commit-bot: I haz the power, 2016-03-18 00:48:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-18 00:49:41]

Description was changed from

==========
[mojo-edk] Shutdown a node's bootstrap parent channel outside its lock.

On OSX, NodeChannel::ShutDown() calls into
NodeController::GetMachPortRelay() which acquires |parent_lock_| and
deadlocks due to a recursuve lock acquisition.

BUG=582468
==========

to

==========
[mojo-edk] Shutdown a node's bootstrap parent channel outside its lock.

On OSX, NodeChannel::ShutDown() calls into
NodeController::GetMachPortRelay() which acquires |parent_lock_| and
deadlocks due to a recursuve lock acquisition.

BUG=582468

Committed: https://crrev.com/86045e737391ccffa0383eaa51c6c2bc858fa0ca
Cr-Commit-Position: refs/heads/master@{#381852}
==========

[commit-bot: I haz the power, 2016-03-18 00:49:41]

Patchset 1 (id:??) landed as
https://crrev.com/86045e737391ccffa0383eaa51c6c2bc858fa0ca
Cr-Commit-Position: refs/heads/master@{#381852}