Clear MatchedPropertiesCache on StyleRule changes.

Clear MatchedPropertiesCache on StyleRule changes.

CSSOM changes used to cause a FullStyleUpdate which cleared the whole
StyleResolver. With the new active stylesheet update using RuleSet-
based style invalidation, clearing the MatchedPropertiesCache was
missing. The reason it needs to be cleared, is that the hash key for
the cache entry is based on StylePropertySet pointers which don't
change when adding/removing declarations to a mutable StylePropertySet.

R=meade@chromium.org
BUG=681183
Review-Url: https://codereview.chromium.org/2679623002
Cr-Commit-Position: refs/heads/master@{#448939}
Committed: https://chromium.googlesource.com/chromium/src/+/8c00af2b243ead60e3d7011b5a85367735f19ba1

[rune, 2017-02-06 11:04:39]

The CQ bit was checked by rune@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2017-02-06 11:04:59]

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, 2017-02-06 12:27:40]

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

[commit-bot: I haz the power, 2017-02-06 12:27:41]

Dry run: This issue passed the CQ dry run.

[rune, 2017-02-06 12:52:10]

ptal

[rune, 2017-02-07 23:04:06]

rune@opera.com changed reviewers:
+ sashab@chromium.org

[meade_UTC10, 2017-02-08 07:57:28]

lgtm

[rune, 2017-02-08 08:21:50]

The CQ bit was checked by rune@opera.com

[commit-bot: I haz the power, 2017-02-08 08:22:19]

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, 2017-02-08 09:59:46]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486542110479740, "parent_rev":
"3912692f9447c3b4bbb31de91f078d50089966ec", "commit_rev":
"8c00af2b243ead60e3d7011b5a85367735f19ba1"}

[commit-bot: I haz the power, 2017-02-08 10:00:23]

Description was changed from

==========
Clear MatchedPropertiesCache on StyleRule changes.

CSSOM changes used to cause a FullStyleUpdate which cleared the whole
StyleResolver. With the new active stylesheet update using RuleSet-
based style invalidation, clearing the MatchedPropertiesCache was
missing. The reason it needs to be cleared, is that the hash key for
the cache entry is based on StylePropertySet pointers which don't
change when adding/removing declarations to a mutable StylePropertySet.

R=meade@chromium.org
BUG=681183
==========

to

==========
Clear MatchedPropertiesCache on StyleRule changes.

CSSOM changes used to cause a FullStyleUpdate which cleared the whole
StyleResolver. With the new active stylesheet update using RuleSet-
based style invalidation, clearing the MatchedPropertiesCache was
missing. The reason it needs to be cleared, is that the hash key for
the cache entry is based on StylePropertySet pointers which don't
change when adding/removing declarations to a mutable StylePropertySet.

R=meade@chromium.org
BUG=681183

Review-Url: https://codereview.chromium.org/2679623002
Cr-Commit-Position: refs/heads/master@{#448939}
Committed:
https://chromium.googlesource.com/chromium/src/+/8c00af2b243ead60e3d7011b5a85...
==========

[commit-bot: I haz the power, 2017-02-08 10:00:28]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/8c00af2b243ead60e3d7011b5a85...