Count consecutive direct adjacent selectors.

Count consecutive direct adjacent selectors.

The maxDirectAdjacentSelectors counter in RuleFeatureSet should only count
the maximum number of consecutive direct adjacent combinators. The number is
used to invalidate style for sibling trees.

For instance a selector like "div+div div+div" only needs to invalidate a
single sibling tree.

When a different combinator is encountered, store the number of consecutive
direct adjacent combinators seen and reset the counter; instead of counting
all direct adjacent combinators in the selector.

R=ojan
BUG=340866
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=166468

[ojan, 2014-02-05 03:13:48]

lgtm

[commit-bot: I haz the power, 2014-02-05 03:43:39]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rune@opera.com/155283002/1

[commit-bot: I haz the power, 2014-02-05 04:21:56]

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

[commit-bot: I haz the power, 2014-02-05 04:21:56]

Retried try job too often on win_blink_rel for step(s) blink_heap_unittests,
blink_platform_unittests, webkit_lint, webkit_python_tests, webkit_tests,
webkit_unit_tests, wtf_unittests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_blink_...

[rune, 2014-02-05 05:58:29]

The CQ bit was checked by rune@opera.com

[commit-bot: I haz the power, 2014-02-05 05:58:44]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rune@opera.com/155283002/1

[commit-bot: I haz the power, 2014-02-05 07:30:34]

Change committed as 166468