Cancel animations before calling ContainerNode::attach in Element::attach.

Cancel animations before calling ContainerNode::attach in Element::attach.

We need to cancel the animation first since the cancel() call can then end up
calling setNeedsStyleRecalc on ourself which would leave a dirty bit set.

By doing it before ContainerNode::attach the dirty bit will be cleared.

A future patch will add an ASSERT that we never leave any dirty bits.

BUG=492730
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=196370

[esprehn, 2015-06-02 04:52:16]

esprehn@chromium.org changed reviewers:
+ dstockwell@chromium.org, timloh@chromium.org

[esprehn, 2015-06-02 16:35:39]

esprehn@chromium.org changed reviewers:
+ ojan@chromium.org

[esprehn, 2015-06-02 16:35:44]

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

[commit-bot: I haz the power, 2015-06-02 16:35:59]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1156213003/40001

[commit-bot: I haz the power, 2015-06-02 18:17:47]

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

[commit-bot: I haz the power, 2015-06-02 18:17:48]

Dry run: Try jobs failed on following builders:
  linux_blink_rel on tryserver.blink (JOB_FAILED,
http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/6...)

[esprehn, 2015-06-02 22:03:54]

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

[commit-bot: I haz the power, 2015-06-02 22:04:46]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1156213003/60001

[esprehn, 2015-06-02 22:06:57]

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

[commit-bot: I haz the power, 2015-06-02 22:07:21]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1156213003/80001

[esprehn, 2015-06-02 22:08:18]

Okay now there's a test, plz review? :)

[commit-bot: I haz the power, 2015-06-02 23:38:16]

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

[commit-bot: I haz the power, 2015-06-02 23:38:18]

Dry run: This issue passed the CQ dry run.

[esprehn, 2015-06-03 02:55:27]

ping. :)

[dstockwell, 2015-06-03 04:57:52]

lgtm

[esprehn, 2015-06-03 05:02:46]

The CQ bit was checked by esprehn@chromium.org

[commit-bot: I haz the power, 2015-06-03 05:03:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1156213003/80001

[commit-bot: I haz the power, 2015-06-03 05:07:50]

Committed patchset #5 (id:80001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=196370