Web Animations: Clip animation active intervals if endDelay is negative

Web Animations: Clip animation active intervals if endDelay is negative

This change updates our implementation of animation phases to match
a recent spec change.
Now the after phase begins at min(start delay + active duration, end time)
where end time is start delay + active duration + end delay.

The behavioural result of this is negative values for endDelay will "clip"
into the animation's active interval.

http://w3c.github.io/web-animations/#animation-effect-phases-and-states

BUG=600248
Committed: https://crrev.com/1ceb7e51509ec80935c26d21658517216b52d8c0
Cr-Commit-Position: refs/heads/master@{#390886}

[alancutter (OOO until 2018), 2016-04-29 09:58:00]

alancutter@chromium.org changed reviewers:
+ suzyh@chromium.org

[alancutter (OOO until 2018), 2016-04-29 09:58:13]

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

[commit-bot: I haz the power, 2016-04-29 09:58:28]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1933113002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1933113002/1

[commit-bot: I haz the power, 2016-04-29 10:05:08]

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

[commit-bot: I haz the power, 2016-04-29 10:05:08]

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

[suzyh_UTC10 (ex-contributor), 2016-05-02 00:05:25]

lgtm

[alancutter (OOO until 2018), 2016-05-02 01:01:15]

The CQ bit was checked by alancutter@chromium.org

[commit-bot: I haz the power, 2016-05-02 01:01:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1933113002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1933113002/1

[commit-bot: I haz the power, 2016-05-02 02:27:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-02 02:28:39]

Description was changed from

==========
Web Animations: Clip animation active intervals if endDelay is negative

This change updates our implementation of animation phases to match
a recent spec change.
Now the after phase begins at min(start delay + active duration, end time)
where end time is start delay + active duration + end delay.

The behavioural result of this is negative values for endDelay will "clip"
into the animation's active interval.

http://w3c.github.io/web-animations/#animation-effect-phases-and-states

BUG=600248
==========

to

==========
Web Animations: Clip animation active intervals if endDelay is negative

This change updates our implementation of animation phases to match
a recent spec change.
Now the after phase begins at min(start delay + active duration, end time)
where end time is start delay + active duration + end delay.

The behavioural result of this is negative values for endDelay will "clip"
into the animation's active interval.

http://w3c.github.io/web-animations/#animation-effect-phases-and-states

BUG=600248

Committed: https://crrev.com/1ceb7e51509ec80935c26d21658517216b52d8c0
Cr-Commit-Position: refs/heads/master@{#390886}
==========

[commit-bot: I haz the power, 2016-05-02 02:28:40]

Patchset 1 (id:??) landed as
https://crrev.com/1ceb7e51509ec80935c26d21658517216b52d8c0
Cr-Commit-Position: refs/heads/master@{#390886}