Revert of Add grid/flex layout support for <fieldset>

Revert of Add grid/flex layout support for <fieldset> (patchset #10 id:290001 of https://codereview.chromium.org/2150003005/ )

Reason for revert:
Causing use-after-frees on ClusterFuzz.

Original issue's description:
> Add grid/flex layout support for <fieldset>
> 
> This adds grid/flex layout support for <fieldset> by
> introducing an anonymous inner block that is used to
> layout fieldset's underlying blocks without interfering
> with the special paint flow used to render <legend>
> element.
> 
> W3C/CSS WG discussion:
> https://github.com/w3c/csswg-drafts/issues/321
> 
> Testing:
> - All affected tests' results were verified to make sure
> that there are no differences in pixel test results between
> old and new version of LayoutFieldSet.
> - 2 more tests were added
> (fieldset-display-{flex|grid}.html)
> - verified interoperability of fieldset(display: flex)
> with Firefox(one of 2 browsers that support fieldset's flex
> layout)
> 
> BUG=262679, 375693
> TEST=fast/forms/fieldset/fieldset-display-flex.html;
> fast/forms/fieldset/fieldset-display-grid.html
> 
> Committed: https://crrev.com/c6d69f896f406c9a7801b29cb8c02a88e5b01770
> Cr-Commit-Position: refs/heads/master@{#409303}

TBR=dmazzoni@chromium.org,aboxhall@chromium.org,cbiesinger@chromium.org,glebl@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=262679, 375693

[inferno, 2016-08-03 20:28:39]

The CQ bit was checked by inferno@chromium.org

[inferno, 2016-08-03 20:28:40]

Created Revert of Add grid/flex layout support for <fieldset>

[commit-bot: I haz the power, 2016-08-03 20:29:16]

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

[cbiesinger, 2016-08-03 20:29:26]

On 2016/08/03 20:28:40, inferno wrote:
> Created Revert of Add grid/flex layout support for <fieldset>

Do you have a link with more details?

[aarya, 2016-08-03 20:29:59]

On 2016/08/03 20:29:26, cbiesinger wrote:
> On 2016/08/03 20:28:40, inferno wrote:
> > Created Revert of Add grid/flex layout support for <fieldset>
> 
> Do you have a link with more details?

https://bugs.chromium.org/p/chromium/issues/detail?id=634114

[commit-bot: I haz the power, 2016-08-03 20:32:17]

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

[commit-bot: I haz the power, 2016-08-03 20:32:18]

Try jobs failed on following builders:
  android_compile_dbg on master.tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/android_comp...)
  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...)
  chromium_presubmit on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)
  linux_chromium_chromeos_ozone_rel_ng on master.tryserver.chromium.linux
(JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  ios-simulator on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)
  mac_chromium_compile_dbg_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[Gleb Lanbin, 2016-08-08 15:15:55]

Description was changed from

==========
Revert of Add grid/flex layout support for <fieldset> (patchset #10 id:290001 of
https://codereview.chromium.org/2150003005/ )

Reason for revert:
Causing use-after-frees on ClusterFuzz.

Original issue's description:
> Add grid/flex layout support for <fieldset>
> 
> This adds grid/flex layout support for <fieldset> by
> introducing an anonymous inner block that is used to
> layout fieldset's underlying blocks without interfering
> with the special paint flow used to render <legend>
> element.
> 
> W3C/CSS WG discussion:
> https://github.com/w3c/csswg-drafts/issues/321
> 
> Testing:
> - All affected tests' results were verified to make sure
> that there are no differences in pixel test results between
> old and new version of LayoutFieldSet.
> - 2 more tests were added
> (fieldset-display-{flex|grid}.html)
> - verified interoperability of fieldset(display: flex)
> with Firefox(one of 2 browsers that support fieldset's flex
> layout)
> 
> BUG=262679,375693
> TEST=fast/forms/fieldset/fieldset-display-flex.html;
> fast/forms/fieldset/fieldset-display-grid.html
> 
> Committed: https://crrev.com/c6d69f896f406c9a7801b29cb8c02a88e5b01770
> Cr-Commit-Position: refs/heads/master@{#409303}

TBR=dmazzoni@chromium.org,aboxhall@chromium.org,cbiesinger@chromium.org,glebl...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=262679,375693
==========

to

==========
Revert of Add grid/flex layout support for <fieldset> (patchset #10 id:290001 of
https://codereview.chromium.org/2150003005/ )

Reason for revert:
Causing use-after-frees on ClusterFuzz.

Original issue's description:
> Add grid/flex layout support for <fieldset>
> 
> This adds grid/flex layout support for <fieldset> by
> introducing an anonymous inner block that is used to
> layout fieldset's underlying blocks without interfering
> with the special paint flow used to render <legend>
> element.
> 
> W3C/CSS WG discussion:
> https://github.com/w3c/csswg-drafts/issues/321
> 
> Testing:
> - All affected tests' results were verified to make sure
> that there are no differences in pixel test results between
> old and new version of LayoutFieldSet.
> - 2 more tests were added
> (fieldset-display-{flex|grid}.html)
> - verified interoperability of fieldset(display: flex)
> with Firefox(one of 2 browsers that support fieldset's flex
> layout)
> 
> BUG=262679,375693
> TEST=fast/forms/fieldset/fieldset-display-flex.html;
> fast/forms/fieldset/fieldset-display-grid.html
> 
> Committed: https://crrev.com/c6d69f896f406c9a7801b29cb8c02a88e5b01770
> Cr-Commit-Position: refs/heads/master@{#409303}

TBR=dmazzoni@chromium.org,aboxhall@chromium.org,cbiesinger@chromium.org,glebl...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=262679,375693
==========