Use invalidation sets for :read-only and :read-write.

Use invalidation sets for :read-only and :read-write.

Gets rid of SubtreeStyleChange which relies on sibling tree recalcs.

R=tkent@chromium.org,ericwilligers@chromium.org
BUG=557440
Committed: https://crrev.com/30b0f37300f8d671d29d91102ec7f475ed4cf7fe
Cr-Commit-Position: refs/heads/master@{#360298}

[rune, 2015-11-18 00:32:55]

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

[commit-bot: I haz the power, 2015-11-18 00:38:32]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1454003002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1454003002/1

[rune, 2015-11-18 00:53:42]

ptal

[tkent, 2015-11-18 01:22:27]

lgtm

[commit-bot: I haz the power, 2015-11-18 02:07:08]

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

[commit-bot: I haz the power, 2015-11-18 02:07:09]

Dry run: This issue passed the CQ dry run.

[rune, 2015-11-18 06:42:30]

The CQ bit was checked by rune@opera.com

[commit-bot: I haz the power, 2015-11-18 06:42:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1454003002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1454003002/1

[commit-bot: I haz the power, 2015-11-18 06:47:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-18 06:48:41]

Patchset 1 (id:??) landed as
https://crrev.com/30b0f37300f8d671d29d91102ec7f475ed4cf7fe
Cr-Commit-Position: refs/heads/master@{#360298}

[Eric Willigers, 2015-11-20 01:33:56]

lgtm