Revert Mojo-based SyncChannel waiting again

Revert Mojo-based SyncChannel waiting again

Still seeing hangs, and not getting useful dumps from them.

Note that this is a combined revert of both r401342 and
r401090 since the former is dependent on the latter.

BUG=612500, 622934, 622982
TBR=jam@chromium.org

Committed: https://crrev.com/ee0123e23c43d56920e9ab0ab92cce3c6fb0a375
Cr-Commit-Position: refs/heads/master@{#401889}

[Ken Rockot(use gerrit already), 2016-06-24 16:20:09]

Patchset #1 (id:1) has been deleted

[Ken Rockot(use gerrit already), 2016-06-24 16:23:04]

Description was changed from

==========
Revert Mojo-based SyncChannel waiting again

Still seeing hangs, and not getting useful dumps from them.

BUG=612500
TBR=jam@chromium.org
==========

to

==========
Revert Mojo-based SyncChannel waiting again

Still seeing hangs, and not getting useful dumps from them.

Note that this is a combined revert of both r401342 and
r401090 since the former is dependent on the latter.

BUG=612500
TBR=jam@chromium.org
==========

[Ken Rockot(use gerrit already), 2016-06-24 16:23:09]

The CQ bit was checked by rockot@chromium.org

[commit-bot: I haz the power, 2016-06-24 16:24:05]

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

[Ken Rockot(use gerrit already), 2016-06-24 16:24:52]

Description was changed from

==========
Revert Mojo-based SyncChannel waiting again

Still seeing hangs, and not getting useful dumps from them.

Note that this is a combined revert of both r401342 and
r401090 since the former is dependent on the latter.

BUG=612500
TBR=jam@chromium.org
==========

to

==========
Revert Mojo-based SyncChannel waiting again

Still seeing hangs, and not getting useful dumps from them.

Note that this is a combined revert of both r401342 and
r401090 since the former is dependent on the latter.

BUG=612500,622934,622982
TBR=jam@chromium.org
==========

[commit-bot: I haz the power, 2016-06-24 17:27:53]

Committed patchset #1 (id:20001)

[commit-bot: I haz the power, 2016-06-24 17:29:51]

Description was changed from

==========
Revert Mojo-based SyncChannel waiting again

Still seeing hangs, and not getting useful dumps from them.

Note that this is a combined revert of both r401342 and
r401090 since the former is dependent on the latter.

BUG=612500,622934,622982
TBR=jam@chromium.org
==========

to

==========
Revert Mojo-based SyncChannel waiting again

Still seeing hangs, and not getting useful dumps from them.

Note that this is a combined revert of both r401342 and
r401090 since the former is dependent on the latter.

BUG=612500,622934,622982
TBR=jam@chromium.org

Committed: https://crrev.com/ee0123e23c43d56920e9ab0ab92cce3c6fb0a375
Cr-Commit-Position: refs/heads/master@{#401889}
==========

[commit-bot: I haz the power, 2016-06-24 17:29:52]

Patchset 1 (id:??) landed as
https://crrev.com/ee0123e23c43d56920e9ab0ab92cce3c6fb0a375
Cr-Commit-Position: refs/heads/master@{#401889}