Make layout test media-audio-no-spurious-repaints.html pass

Make layout test media-audio-no-spurious-repaints.html pass

The number of invalidations has doubled in some cases. None of the
changes I could see to the MediaControls shadow DOM seem to have
caused this, so I cannot explain why the increase happened. But it
has, and a couple more repaints doesn't seem like a major problem.

TBR=wangxianzhu@chromium.org
BUG=681471
Review-Url: https://codereview.chromium.org/2754533002
Cr-Commit-Position: refs/heads/master@{#456855}
Committed: https://chromium.googlesource.com/chromium/src/+/d1df3ad6b707ae3bfff924a4674207e4772cd5fa

[Stephen Chennney, 2017-03-14 20:34:10]

The CQ bit was checked by schenney@chromium.org

[commit-bot: I haz the power, 2017-03-14 20:35:02]

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, 2017-03-14 22:05:49]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489523650514750, "parent_rev":
"6ae32340045b34731655b0cc37c222615f3ad6ae", "commit_rev":
"d1df3ad6b707ae3bfff924a4674207e4772cd5fa"}

[commit-bot: I haz the power, 2017-03-14 22:06:32]

Description was changed from

==========
Make layout test media-audio-no-spurious-repaints.html pass

The number of invalidations has doubled in some cases. None of the
changes I could see to the MediaControls shadow DOM seem to have
caused this, so I cannot explain why the increase happened. But it
has, and a couple more repaints doesn't seem like a major problem.

TBR=wangxianzhu@chromium.org
BUG=681471
==========

to

==========
Make layout test media-audio-no-spurious-repaints.html pass

The number of invalidations has doubled in some cases. None of the
changes I could see to the MediaControls shadow DOM seem to have
caused this, so I cannot explain why the increase happened. But it
has, and a couple more repaints doesn't seem like a major problem.

TBR=wangxianzhu@chromium.org
BUG=681471

Review-Url: https://codereview.chromium.org/2754533002
Cr-Commit-Position: refs/heads/master@{#456855}
Committed:
https://chromium.googlesource.com/chromium/src/+/d1df3ad6b707ae3bfff924a46742...
==========

[commit-bot: I haz the power, 2017-03-14 22:06:38]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/d1df3ad6b707ae3bfff924a46742...