Add helpful comments to our bug workaround

Add helpful comments to our bug workaround

BUG=chromium:696216
Review-Url: https://codereview.chromium.org/2728303003
Cr-Commit-Position: refs/heads/master@{#455091}
Committed: https://chromium.googlesource.com/chromium/src/+/71b442ceca5ebcbbba1d4feff8fcc4c45eedc146

[liyuqian, 2017-03-06 21:48:11]

Description was changed from

==========
Add helpful comments to our bug workaround

BUG=chromium:696216
==========

to

==========
Add helpful comments to our bug workaround

BUG=chromium:696216
==========

[liyuqian, 2017-03-06 21:48:11]

liyuqian@google.com changed reviewers:
+ fmalita@chromium.org, mtklein@chromium.org

[liyuqian, 2017-03-06 21:49:46]

I'm adding some comments so the person who breaks this layout test by actually
fixing the bug won't see a crazy error message that makes no sense.

[f(malita), 2017-03-07 15:02:03]

lgtm

[liyuqian, 2017-03-07 15:09:59]

The CQ bit was checked by liyuqian@google.com

[commit-bot: I haz the power, 2017-03-07 15:10:33]

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, 2017-03-07 16:13:23]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488899399506760, "parent_rev":
"48682bdc566d06ea7e144083a4b7bf61bed98576", "commit_rev":
"71b442ceca5ebcbbba1d4feff8fcc4c45eedc146"}

[commit-bot: I haz the power, 2017-03-07 16:14:11]

Description was changed from

==========
Add helpful comments to our bug workaround

BUG=chromium:696216
==========

to

==========
Add helpful comments to our bug workaround

BUG=chromium:696216

Review-Url: https://codereview.chromium.org/2728303003
Cr-Commit-Position: refs/heads/master@{#455091}
Committed:
https://chromium.googlesource.com/chromium/src/+/71b442ceca5ebcbbba1d4feff8fc...
==========

[commit-bot: I haz the power, 2017-03-07 16:14:12]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/71b442ceca5ebcbbba1d4feff8fc...