Revert increased limit for m_selectorIndex.

Revert increased limit for m_selectorIndex.

If 2^13 simple selectors in a style rule was not enough, 2^14 will be
exceeded at some point. Leave the available bit for later use and avoid
regressions for m_selectorIndex when we need that bit.

R=esprehn@chromium.org
BUG=704562
Review-Url: https://codereview.chromium.org/2797953002
Cr-Commit-Position: refs/heads/master@{#462015}
Committed: https://chromium.googlesource.com/chromium/src/+/6a550e547934bfce597bab1d52bf89a3ae18d1df

[rune, 2017-04-05 07:34:57]

Reverting bitfield change, but keeping added comments and unit test.

ptal

[rune, 2017-04-05 07:35:37]

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

[commit-bot: I haz the power, 2017-04-05 07:35:54]

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

[esprehn, 2017-04-05 08:27:50]

lgtm

[commit-bot: I haz the power, 2017-04-05 09:08:35]

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

[commit-bot: I haz the power, 2017-04-05 09:08:36]

Dry run: This issue passed the CQ dry run.

[rune, 2017-04-05 09:12:41]

The CQ bit was checked by rune@opera.com

[commit-bot: I haz the power, 2017-04-05 09:12:56]

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, 2017-04-05 09:17:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491383561116820, "parent_rev":
"f48da6f6814d77b35c3d91a4df5dca714e01af0d", "commit_rev":
"6a550e547934bfce597bab1d52bf89a3ae18d1df"}

[commit-bot: I haz the power, 2017-04-05 09:17:53]

Description was changed from

==========
Revert increased limit for m_selectorIndex.

If 2^13 simple selectors in a style rule was not enough, 2^14 will be
exceeded at some point. Leave the available bit for later use and avoid
regressions for m_selectorIndex when we need that bit.

R=esprehn@chromium.org
BUG=704562
==========

to

==========
Revert increased limit for m_selectorIndex.

If 2^13 simple selectors in a style rule was not enough, 2^14 will be
exceeded at some point. Leave the available bit for later use and avoid
regressions for m_selectorIndex when we need that bit.

R=esprehn@chromium.org
BUG=704562

Review-Url: https://codereview.chromium.org/2797953002
Cr-Commit-Position: refs/heads/master@{#462015}
Committed:
https://chromium.googlesource.com/chromium/src/+/6a550e547934bfce597bab1d52bf...
==========

[commit-bot: I haz the power, 2017-04-05 09:17:57]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6a550e547934bfce597bab1d52bf...