Revert of scheduler: Re-enable timer throttling for hidden frames

Revert of scheduler: Re-enable timer throttling for hidden frames (patchset #6 id:100001 of https://codereview.chromium.org/2468863002/ )

Reason for revert:
Regressed crbug.com/647393.

Original issue's description:
> scheduler: Re-enable timer throttling for hidden frames
>
> Turn hidden timer throttling back now that the issue with Gmail pop-ups
> not working has been resolved by https://codereview.chromium.org/2272773002/.
>
> This patch also fixes a timer throttling related rebase error in a
> previous patch and adds new layout test that cover out-of-view timer
> and requestAnimationFrame throttling.
>
> Intent to ship: https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/_Lhz8THHk2Q
>
> BUG=616519, 647393
>
> Committed: https://crrev.com/1688130897aed95d32e3904a6aa10384414fbefe
> Cr-Commit-Position: refs/heads/master@{#432642}

TBR=kinuko@chromium.org,ojan@chromium.org,ojan@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=616519, 647393
Committed: https://crrev.com/32461cca06891c91b22bb827c240333035d37289
Cr-Commit-Position: refs/heads/master@{#433061}

[Sami, 2016-11-17 23:04:22]

The CQ bit was checked by skyostil@chromium.org

[Sami, 2016-11-17 23:04:22]

Created Revert of scheduler: Re-enable timer throttling for hidden frames

[commit-bot: I haz the power, 2016-11-17 23:06:44]

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, 2016-11-18 00:27:26]

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

[commit-bot: I haz the power, 2016-11-18 00:27:27]

Try jobs failed on following builders:
  win_chromium_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[Sami, 2016-11-18 00:32:01]

The CQ bit was checked by skyostil@chromium.org

[commit-bot: I haz the power, 2016-11-18 00:34:44]

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, 2016-11-18 01:10:10]

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

[commit-bot: I haz the power, 2016-11-18 01:10:11]

Try jobs failed on following builders:
  linux_chromium_clobber_rel_ng on master.tryserver.chromium.linux
(JOB_TIMED_OUT, no build URL)

[Sami, 2016-11-18 01:47:48]

The CQ bit was checked by skyostil@chromium.org

[commit-bot: I haz the power, 2016-11-18 01:49:35]

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, 2016-11-18 03:27:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-18 03:32:19]

Description was changed from

==========
Revert of scheduler: Re-enable timer throttling for hidden frames (patchset #6
id:100001 of https://codereview.chromium.org/2468863002/ )

Reason for revert:
Regressed crbug.com/647393.

Original issue's description:
> scheduler: Re-enable timer throttling for hidden frames
> 
> Turn hidden timer throttling back now that the issue with Gmail pop-ups
> not working has been resolved by https://codereview.chromium.org/2272773002/.
> 
> This patch also fixes a timer throttling related rebase error in a
> previous patch and adds new layout test that cover out-of-view timer
> and requestAnimationFrame throttling.
> 
> Intent to ship:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/_Lhz8THHk2Q
> 
> BUG=616519,647393
> 
> Committed: https://crrev.com/1688130897aed95d32e3904a6aa10384414fbefe
> Cr-Commit-Position: refs/heads/master@{#432642}

TBR=kinuko@chromium.org,ojan@chromium.org,ojan@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=616519,647393
==========

to

==========
Revert of scheduler: Re-enable timer throttling for hidden frames (patchset #6
id:100001 of https://codereview.chromium.org/2468863002/ )

Reason for revert:
Regressed crbug.com/647393.

Original issue's description:
> scheduler: Re-enable timer throttling for hidden frames
>
> Turn hidden timer throttling back now that the issue with Gmail pop-ups
> not working has been resolved by https://codereview.chromium.org/2272773002/.
>
> This patch also fixes a timer throttling related rebase error in a
> previous patch and adds new layout test that cover out-of-view timer
> and requestAnimationFrame throttling.
>
> Intent to ship:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/_Lhz8THHk2Q
>
> BUG=616519,647393
>
> Committed: https://crrev.com/1688130897aed95d32e3904a6aa10384414fbefe
> Cr-Commit-Position: refs/heads/master@{#432642}

TBR=kinuko@chromium.org,ojan@chromium.org,ojan@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=616519,647393

Committed: https://crrev.com/32461cca06891c91b22bb827c240333035d37289
Cr-Commit-Position: refs/heads/master@{#433061}
==========

[commit-bot: I haz the power, 2016-11-18 03:32:21]

Patchset 1 (id:??) landed as
https://crrev.com/32461cca06891c91b22bb827c240333035d37289
Cr-Commit-Position: refs/heads/master@{#433061}