Disable DisplayItemClient aliveness checking when DCHECK is off

Disable DisplayItemClient aliveness checking when DCHECK is off

Only 1 crash report on 53.0.2777.0, and no crash reports after.
Disable the checking when DCHECK is off to unblock beta release
of m53.

BUG=609218
Committed: https://crrev.com/64a18013d7e52fe0372b97ac586e0ed652637bb0
Cr-Commit-Position: refs/heads/master@{#402372}

[Xianzhu, 2016-06-27 21:01:57]

wangxianzhu@chromium.org changed reviewers:
+ chrishtr@chromium.org

[chrishtr, 2016-06-27 21:21:47]

The CQ bit was checked by chrishtr@chromium.org

[chrishtr, 2016-06-27 21:21:47]

lgtm

[commit-bot: I haz the power, 2016-06-27 21:22:50]

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, 2016-06-27 21:50:23]

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

[commit-bot: I haz the power, 2016-06-27 21:50:25]

Try jobs failed on following builders:
  chromeos_x86-generic_chromium_compile_only_ng on
master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromeos_x86-ge...)

[Xianzhu, 2016-06-28 00:19:59]

The CQ bit was checked by wangxianzhu@chromium.org

[Xianzhu, 2016-06-28 00:20:00]

The patchset sent to the CQ was uploaded after l-g-t-m from
chrishtr@chromium.org
Link to the patchset: https://codereview.chromium.org/2104603002/#ps20001
(title: "Disable DisplayItemClient aliveness checking when DCHECK is off")

[commit-bot: I haz the power, 2016-06-28 00:21:15]

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, 2016-06-28 02:01:00]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-06-28 02:02:47]

Description was changed from

==========
Disable DisplayItemClient aliveness checking when DCHECK is off

Only 1 crash report on 53.0.2777.0, and no crash reports after.
Disable the checking when DCHECK is off to unblock beta release
of m53.

BUG=609218
==========

to

==========
Disable DisplayItemClient aliveness checking when DCHECK is off

Only 1 crash report on 53.0.2777.0, and no crash reports after.
Disable the checking when DCHECK is off to unblock beta release
of m53.

BUG=609218

Committed: https://crrev.com/64a18013d7e52fe0372b97ac586e0ed652637bb0
Cr-Commit-Position: refs/heads/master@{#402372}
==========

[commit-bot: I haz the power, 2016-06-28 02:02:49]

Patchset 2 (id:??) landed as
https://crrev.com/64a18013d7e52fe0372b97ac586e0ed652637bb0
Cr-Commit-Position: refs/heads/master@{#402372}