Support deeply nested uncommonAttributeSelectors.

Support deeply nested uncommonAttributeSelectors.

Selectors containing attribute selectors are collected to the
StyleResolver and matched against elements to check if they can share
style with other elements.

The function looking for attributes only went one level down for
functional pseudo classes, which means selectors like:

  :-webkit-any(:not([attr]))

were ignored and caused style to be incorrectly shared between elements.

R=leviw@chromium.org
BUG=540856
Committed: https://crrev.com/ab771e4962f9ae0eded016f6bf83f6935d98e80e
Cr-Commit-Position: refs/heads/master@{#353019}

[rune, 2015-10-07 21:46:49]

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

[commit-bot: I haz the power, 2015-10-07 21:48:02]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1394663003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1394663003/1

[commit-bot: I haz the power, 2015-10-07 23:18:26]

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

[commit-bot: I haz the power, 2015-10-07 23:18:26]

Dry run: This issue passed the CQ dry run.

[leviw_travelin_and_unemployed, 2015-10-08 07:55:59]

The CQ bit was checked by leviw@chromium.org

[leviw_travelin_and_unemployed, 2015-10-08 07:55:59]

lgtm

Good catch!

[commit-bot: I haz the power, 2015-10-08 07:56:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1394663003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1394663003/1

[commit-bot: I haz the power, 2015-10-08 08:00:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-08 08:01:16]

Patchset 1 (id:??) landed as
https://crrev.com/ab771e4962f9ae0eded016f6bf83f6935d98e80e
Cr-Commit-Position: refs/heads/master@{#353019}