CustomElements: taking CustomElementReactionStack out of frameHost

CustomElements: taking CustomElementReactionStack out of frameHost
and creating static object CustomElementReactionStack

Taking CustomElementReactionStack out of the frameHost, because having
it associated with the frameHost complicates ReactionStack retrieval
when an element is moved to a new document.
This patch does not change existing behaviours, no need for additional
tests.

BUG=594918
Committed: https://crrev.com/dda455b659198c46ded45847d250876a81af5d07
Cr-Commit-Position: refs/heads/master@{#410310}

[davaajav, 2016-08-05 08:52:56]

davaajav@google.com changed reviewers:
+ dominicc@chromium.org, kojii@chromium.org

[davaajav, 2016-08-05 08:52:57]

PTL

[dominicc (has gone to gerrit), 2016-08-08 05:20:30]

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

[commit-bot: I haz the power, 2016-08-08 05:20:41]

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

[dominicc (has gone to gerrit), 2016-08-08 05:21:09]

LGTM.

I wonder if we can simplify the distinction between the current and backup queue
as a next step (not in this patch.)

[dominicc (has gone to gerrit), 2016-08-08 06:36:29]

The CQ bit was unchecked by dominicc@chromium.org

[dominicc (has gone to gerrit), 2016-08-08 06:36:32]

The CQ bit was checked by dominicc@chromium.org

[commit-bot: I haz the power, 2016-08-08 06:36:52]

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, 2016-08-08 06:47:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-08 06:50:00]

Description was changed from

==========
CustomElements: taking CustomElementReactionStack out of frameHost
and creating static object CustomElementReactionStack

Taking CustomElementReactionStack out of the frameHost, because having
it associated with the frameHost complicates ReactionStack retrieval
when an element is moved to a new document.
This patch does not change existing behaviours, no need for additional
tests.

BUG=594918
==========

to

==========
CustomElements: taking CustomElementReactionStack out of frameHost
and creating static object CustomElementReactionStack

Taking CustomElementReactionStack out of the frameHost, because having
it associated with the frameHost complicates ReactionStack retrieval
when an element is moved to a new document.
This patch does not change existing behaviours, no need for additional
tests.

BUG=594918

Committed: https://crrev.com/dda455b659198c46ded45847d250876a81af5d07
Cr-Commit-Position: refs/heads/master@{#410310}
==========

[commit-bot: I haz the power, 2016-08-08 06:50:01]

Patchset 1 (id:??) landed as
https://crrev.com/dda455b659198c46ded45847d250876a81af5d07
Cr-Commit-Position: refs/heads/master@{#410310}