Disallow 'position: sticky' on <thead> and <tr> elements.

Disallow 'position: sticky' on <thead> and <tr> elements.

The implementation of in-flow positioned elements in Blink does not
support <thead> and <tr> as per the CSS 2.1 spec. This makes it
difficult to support position: sticky for them, so until Blink supports
CSS 3 positioning we should disallow it.

BUG=695179
Review-Url: https://codereview.chromium.org/2711803002
Cr-Commit-Position: refs/heads/master@{#453619}
Committed: https://chromium.googlesource.com/chromium/src/+/d10f5767cbf8050a4d39a3f42306d58eab351cf7

[smcgruer, 2017-02-22 21:04:34]

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

[commit-bot: I haz the power, 2017-02-22 21:05:15]

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

[smcgruer, 2017-02-22 21:08:28]

The CQ bit was unchecked by smcgruer@chromium.org

[smcgruer, 2017-02-22 21:12:29]

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

[commit-bot: I haz the power, 2017-02-22 21:13:35]

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, 2017-02-22 22:46:07]

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

[commit-bot: I haz the power, 2017-02-22 22:46:08]

Dry run: This issue passed the CQ dry run.

[smcgruer, 2017-02-22 23:06:46]

smcgruer@chromium.org changed reviewers:
+ flackr@chromium.org

[flackr, 2017-02-22 23:18:46]

LGTM

[smcgruer, 2017-02-22 23:21:39]

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

[smcgruer, 2017-02-22 23:21:40]

With apologies for the number of CLs today, +chrishtr for Blink OWNERS :)

[smcgruer, 2017-02-23 20:03:59]

smcgruer@chromium.org changed reviewers:
+ pdr@google.com

[smcgruer, 2017-02-23 20:04:20]

Description was changed from

==========
Disallow 'position: sticky' on <thead> and <tr> elements.

The implementation of in-flow positioned elements in Blink does not
support <thead> and <tr> as per the CSS 2.1 spec. This makes it
difficult to support position: sticky for them, so until Blink supports
CSS 3 positioning we should disallow it.

BUG=695179
==========

to

==========
Disallow 'position: sticky' on <thead> and <tr> elements.

The implementation of in-flow positioned elements in Blink does not
support <thead> and <tr> as per the CSS 2.1 spec. This makes it
difficult to support position: sticky for them, so until Blink supports
CSS 3 positioning we should disallow it.

BUG=695179
==========

[smcgruer, 2017-02-23 20:04:20]

smcgruer@chromium.org changed reviewers:
+ pdr@chromium.org
- pdr@google.com

[smcgruer, 2017-02-28 13:48:24]

smcgruer@chromium.org changed reviewers:
+ schenney@chromium.org

[smcgruer, 2017-02-28 13:48:26]

Ping for Blink OWNERS :)

[rune, 2017-02-28 14:23:48]

rune@opera.com changed reviewers:
+ rune@opera.com

[rune, 2017-02-28 14:23:48]

Looks reasonable to me, lgtm.

[smcgruer, 2017-02-28 15:16:01]

The CQ bit was checked by smcgruer@chromium.org

[commit-bot: I haz the power, 2017-02-28 15:16:20]

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, 2017-02-28 16:36:33]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1488294961726380,
"parent_rev": "d637943d57bb3abdf1f6285c714daf165d416ac5", "commit_rev":
"d10f5767cbf8050a4d39a3f42306d58eab351cf7"}

[commit-bot: I haz the power, 2017-02-28 16:37:14]

Description was changed from

==========
Disallow 'position: sticky' on <thead> and <tr> elements.

The implementation of in-flow positioned elements in Blink does not
support <thead> and <tr> as per the CSS 2.1 spec. This makes it
difficult to support position: sticky for them, so until Blink supports
CSS 3 positioning we should disallow it.

BUG=695179
==========

to

==========
Disallow 'position: sticky' on <thead> and <tr> elements.

The implementation of in-flow positioned elements in Blink does not
support <thead> and <tr> as per the CSS 2.1 spec. This makes it
difficult to support position: sticky for them, so until Blink supports
CSS 3 positioning we should disallow it.

BUG=695179

Review-Url: https://codereview.chromium.org/2711803002
Cr-Commit-Position: refs/heads/master@{#453619}
Committed:
https://chromium.googlesource.com/chromium/src/+/d10f5767cbf8050a4d39a3f42306...
==========

[commit-bot: I haz the power, 2017-02-28 16:37:15]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/d10f5767cbf8050a4d39a3f42306...