Simplify the SelectorQuery constructor and reuse CSSSelectorList::length().

Simplify the SelectorQuery constructor and reuse CSSSelectorList::length().

Instead of reimplementing length(), lets just give it a name that makes
it clear it's actually doing work and isn't free so folks don't use it
in for loops.

BUG=703900
Review-Url: https://codereview.chromium.org/2774663003
Cr-Commit-Position: refs/heads/master@{#459279}
Committed: https://chromium.googlesource.com/chromium/src/+/eec8e66dfa3536d3ab04a497434490ace4ae75cf

[esprehn, 2017-03-23 19:33:37]

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

[commit-bot: I haz the power, 2017-03-23 19:34:05]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[esprehn, 2017-03-23 20:10:39]

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

[commit-bot: I haz the power, 2017-03-23 20:53:26]

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

[commit-bot: I haz the power, 2017-03-23 20:53:27]

Dry run: Try jobs failed on following builders:
  linux_chromium_rel_ng on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[esprehn, 2017-03-23 21:15:29]

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

[commit-bot: I haz the power, 2017-03-23 21:16:05]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[esprehn, 2017-03-23 21:16:51]

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

[commit-bot: I haz the power, 2017-03-23 21:17:29]

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, 2017-03-23 22:47:52]

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

[commit-bot: I haz the power, 2017-03-23 22:47:53]

Dry run: This issue passed the CQ dry run.

[rune, 2017-03-23 23:02:58]

lgtm

[esprehn, 2017-03-23 23:19:08]

The CQ bit was checked by esprehn@chromium.org

[commit-bot: I haz the power, 2017-03-23 23:20:00]

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, 2017-03-23 23:31:53]

CQ is committing da patch.

Bot data: {"patchset_id": 40001, "attempt_start_ts": 1490311148471910,
"parent_rev": "23885b6eeb422241f91094c808fdcc9ce5f80eb3", "commit_rev":
"eec8e66dfa3536d3ab04a497434490ace4ae75cf"}

[commit-bot: I haz the power, 2017-03-23 23:33:58]

Description was changed from

==========
Simplify the SelectorQuery constructor and reuse CSSSelectorList::length().

Instead of reimplementing length(), lets just give it a name that makes
it clear it's actually doing work and isn't free so folks don't use it
in for loops.

BUG=703900
==========

to

==========
Simplify the SelectorQuery constructor and reuse CSSSelectorList::length().

Instead of reimplementing length(), lets just give it a name that makes
it clear it's actually doing work and isn't free so folks don't use it
in for loops.

BUG=703900

Review-Url: https://codereview.chromium.org/2774663003
Cr-Commit-Position: refs/heads/master@{#459279}
Committed:
https://chromium.googlesource.com/chromium/src/+/eec8e66dfa3536d3ab04a4974344...
==========

[commit-bot: I haz the power, 2017-03-23 23:33:59]

Committed patchset #3 (id:40001) as
https://chromium.googlesource.com/chromium/src/+/eec8e66dfa3536d3ab04a4974344...