CSS Transitions: Fix flaky move-after-transition.html

CSS Transitions: Fix flaky move-after-transition.html

We force a style recalc at the start, so a transition occurs.

We wait for the compositor before declaring the test complete.

BUG=248938

[Eric Willigers, 2017-01-06 02:34:42]

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

[commit-bot: I haz the power, 2017-01-06 02:35:21]

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, 2017-01-06 03:35:19]

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

[commit-bot: I haz the power, 2017-01-06 03:35:20]

Dry run: This issue passed the CQ dry run.

[Eric Willigers, 2017-01-06 03:51:38]

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

[suzyh_UTC10 (ex-contributor), 2017-01-06 03:56:38]

lgtm

[Eric Willigers, 2017-01-06 03:57:12]

The CQ bit was checked by ericwilligers@chromium.org

[commit-bot: I haz the power, 2017-01-06 03:57:30]

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, 2017-01-06 04:01:40]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1483675032410760, "parent_rev":
"9c484365968491ca416461d7c982aca155ff26bf", "commit_rev":
"4491dc8826a2247f807c502afbc896d0130c115b"}

[commit-bot: I haz the power, 2017-01-06 04:05:24]

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

[commit-bot: I haz the power, 2017-01-06 04:05:26]

Prior attempt to commit was detected, but we were not able to check whether the
issue was successfully committed. Please check Git history manually and re-check
CQ or close this issue as needed.

[Eric Willigers, 2017-01-06 04:15:42]

On 2017/01/06 04:05:26, commit-bot: I haz the power wrote:
> Prior attempt to commit was detected, but we were not able to check whether
the
> issue was successfully committed. Please check Git history manually and
re-check
> CQ or close this issue as needed.

Cr-Commit-Position: refs/heads/master@{#441867}

[Eric Willigers, 2017-01-06 04:18:29]

Description was changed from

==========
CSS Transitions: Fix flaky move-after-transition.html

We force a style recalc at the start, so a transition occurs.

We wait for the compositor before declaring the test complete.

BUG=248938
==========

to

==========
CSS Transitions: Fix flaky move-after-transition.html

We force a style recalc at the start, so a transition occurs.

We wait for the compositor before declaring the test complete.

BUG=248938
==========