Check display list canvas fall back reason unknown

Check display list canvas fall back reason unknown

The FallbackReasonUnknown bin is still non-zero. This CL changes DCHECK
to CHECK, such that when Unknown happens, browser crashes. This will hit
canary first, once we have crash report with stack trace, we can fix it
right away.

BUG=585578
Committed: https://crrev.com/19ec8b20ec90c3e7d3a957ea3e5aeb2062e97962
Cr-Commit-Position: refs/heads/master@{#404040}

[xidachen, 2016-07-06 19:36:04]

xidachen@chromium.org changed reviewers:
+ junov@chromium.org

[xidachen, 2016-07-06 19:36:05]

PTAL

[Justin Novosad, 2016-07-06 20:26:21]

On 2016/07/06 19:36:05, xidachen wrote:
> PTAL

lgtm

[xidachen, 2016-07-06 20:26:57]

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

[commit-bot: I haz the power, 2016-07-06 20:27:52]

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, 2016-07-06 23:51:34]

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

[commit-bot: I haz the power, 2016-07-06 23:51:35]

Dry run: This issue passed the CQ dry run.

[xidachen, 2016-07-07 01:36:39]

The CQ bit was unchecked by xidachen@chromium.org

[xidachen, 2016-07-07 01:36:39]

The CQ bit was checked by xidachen@chromium.org

[commit-bot: I haz the power, 2016-07-07 01:37:18]

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, 2016-07-07 02:42:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-07 02:42:53]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-07 02:44:02]

Description was changed from

==========
Check display list canvas fall back reason unknown

The FallbackReasonUnknown bin is still non-zero. This CL changes DCHECK
to CHECK, such that when Unknown happens, browser crashes. This will hit
canary first, once we have crash report with stack trace, we can fix it
right away.

BUG=585578
==========

to

==========
Check display list canvas fall back reason unknown

The FallbackReasonUnknown bin is still non-zero. This CL changes DCHECK
to CHECK, such that when Unknown happens, browser crashes. This will hit
canary first, once we have crash report with stack trace, we can fix it
right away.

BUG=585578

Committed: https://crrev.com/19ec8b20ec90c3e7d3a957ea3e5aeb2062e97962
Cr-Commit-Position: refs/heads/master@{#404040}
==========

[commit-bot: I haz the power, 2016-07-07 02:44:03]

Patchset 1 (id:??) landed as
https://crrev.com/19ec8b20ec90c3e7d3a957ea3e5aeb2062e97962
Cr-Commit-Position: refs/heads/master@{#404040}