Replace marquee in test to make it deterministic.

Replace marquee in test to make it deterministic.

Marquees cause visible state changes in the layout tree both because
they trigger extra layers and because the scroll offset is not well known.

Most often the LayoutTest framework captures marquees after the
shadow <div> has been created but before the layout engine has
reacted to the transformation commands and animation. But not always.

This groups the marquee tests in TestExpectations (they should be treated
as the same problem) and replaces one marquee with an equally good generic
element.

BUG=439478
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=189015

[Daniel Bratell, 2015-01-26 17:31:33]

bratell@opera.com changed reviewers:
+ mkwst@chromium.org

[Daniel Bratell, 2015-01-26 17:31:33]

mkwst, could you please take a look?

[Mike West, 2015-01-26 18:09:44]

lgtm

Nice!

LGTM.

[Daniel Bratell, 2015-01-27 09:02:47]

The CQ bit was checked by bratell@opera.com

[commit-bot: I haz the power, 2015-01-27 09:03:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/879603002/20001

[commit-bot: I haz the power, 2015-01-27 09:50:58]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=189015