Fix missing distribution recalc in quirks mode and Shadow DOM v0.

Fix missing distribution recalc in quirks mode and Shadow DOM v0.

If a shadow tree had the following CONTENT element, and a class attribute of an
element was changed to class="K", distribution recalc was not triggered
because selector matching in quirks mode is done with ASCII-lower strings, but
Element::ShouldInvalidateDistributionWhenAttributeChanged() incorrectly applied
Unicode fold-case.

  <content select=".&#x212a;">

This CL is a behavior change, but this doesn't add a new test because Shadow DOM
v0 will be removed, and Shadow DOM in quirks mode must be very rare.

BUG=627682
Review-Url: https://codereview.chromium.org/2902903002
Cr-Commit-Position: refs/heads/master@{#474209}
Committed: https://chromium.googlesource.com/chromium/src/+/e4c18f4225d4a580bd6506687f9e39e42a79d32d

[tkent, 2017-05-24 05:27:40]

Description was changed from

==========
Fix wrong distribution recalc in quirks mode and Shadow DOM v0.

If a shadow tree had the following CONTENT element, and a class attribute of an
element was changed to class="K", distribution recalc was not triggered
because selector matching in quirks mode is done with ASCII-lower strings, but
Element::ShouldInvalidateDistributionWhenAttributeChanged() incorrectly applied
Unicode fold-case.

  <content select=".&#x212a;">

This CL is a behavior change, but this doesn't add a new test because Shadow DOM
v0 will be removed, and Shadow DOM in quirks mode must be very rare.
==========

to

==========
Fix missing distribution recalc in quirks mode and Shadow DOM v0.

If a shadow tree had the following CONTENT element, and a class attribute of an
element was changed to class="&#x212a;", distribution recalc was not triggered
because selector matching in quirks mode is done with ASCII-lower strings, but
Element::ShouldInvalidateDistributionWhenAttributeChanged() incorrectly applied
Unicode fold-case.

  <content select=".&#x212a;">

This CL is a behavior change, but this doesn't add a new test because Shadow DOM
v0 will be removed, and Shadow DOM in quirks mode must be very rare.
==========

[tkent, 2017-05-24 05:28:28]

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

[tkent, 2017-05-24 05:29:14]

tkent@chromium.org changed reviewers:
+ hayato@chromium.org

[tkent, 2017-05-24 05:29:15]

hayato@, would you review this please?

[commit-bot: I haz the power, 2017-05-24 05:29:19]

Dry run: CQ is trying da patch.

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

[tkent, 2017-05-24 05:31:03]

Description was changed from

==========
Fix missing distribution recalc in quirks mode and Shadow DOM v0.

If a shadow tree had the following CONTENT element, and a class attribute of an
element was changed to class="K", distribution recalc was not triggered
because selector matching in quirks mode is done with ASCII-lower strings, but
Element::ShouldInvalidateDistributionWhenAttributeChanged() incorrectly applied
Unicode fold-case.

  <content select=".&#x212a;">

This CL is a behavior change, but this doesn't add a new test because Shadow DOM
v0 will be removed, and Shadow DOM in quirks mode must be very rare.
==========

to

==========
Fix missing distribution recalc in quirks mode and Shadow DOM v0.

If a shadow tree had the following CONTENT element, and a class attribute of an
element was changed to class="&#x212a;", distribution recalc was not triggered
because selector matching in quirks mode is done with ASCII-lower strings, but
Element::ShouldInvalidateDistributionWhenAttributeChanged() incorrectly applied
Unicode fold-case.

  <content select=".&#x212a;">

This CL is a behavior change, but this doesn't add a new test because Shadow DOM
v0 will be removed, and Shadow DOM in quirks mode must be very rare.

BUG=627682
==========

[hayato, 2017-05-24 05:41:26]

lgtm

[commit-bot: I haz the power, 2017-05-24 07:41:12]

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

[commit-bot: I haz the power, 2017-05-24 07:41:13]

Dry run: This issue passed the CQ dry run.

[tkent, 2017-05-24 08:04:16]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2017-05-24 08:04:40]

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, 2017-05-24 08:08:16]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495613056124670, "parent_rev":
"34b172e7ab8351503320d95338a2d8014504e375", "commit_rev":
"e4c18f4225d4a580bd6506687f9e39e42a79d32d"}

[commit-bot: I haz the power, 2017-05-24 08:08:24]

Description was changed from

==========
Fix missing distribution recalc in quirks mode and Shadow DOM v0.

If a shadow tree had the following CONTENT element, and a class attribute of an
element was changed to class="K", distribution recalc was not triggered
because selector matching in quirks mode is done with ASCII-lower strings, but
Element::ShouldInvalidateDistributionWhenAttributeChanged() incorrectly applied
Unicode fold-case.

  <content select=".&#x212a;">

This CL is a behavior change, but this doesn't add a new test because Shadow DOM
v0 will be removed, and Shadow DOM in quirks mode must be very rare.

BUG=627682
==========

to

==========
Fix missing distribution recalc in quirks mode and Shadow DOM v0.

If a shadow tree had the following CONTENT element, and a class attribute of an
element was changed to class="&#x212a;", distribution recalc was not triggered
because selector matching in quirks mode is done with ASCII-lower strings, but
Element::ShouldInvalidateDistributionWhenAttributeChanged() incorrectly applied
Unicode fold-case.

  <content select=".&#x212a;">

This CL is a behavior change, but this doesn't add a new test because Shadow DOM
v0 will be removed, and Shadow DOM in quirks mode must be very rare.

BUG=627682

Review-Url: https://codereview.chromium.org/2902903002
Cr-Commit-Position: refs/heads/master@{#474209}
Committed:
https://chromium.googlesource.com/chromium/src/+/e4c18f4225d4a580bd6506687f9e...
==========

[commit-bot: I haz the power, 2017-05-24 08:08:25]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/e4c18f4225d4a580bd6506687f9e...