Remove LayoutTest animations/fill-mode-forwards.html

Remove LayoutTest animations/fill-mode-forwards.html

This test relies on receiving a specific number of animationiteration events.
However, in both the legacy and Web Animations implementations, we do not
guarantee that the correct number of these events is fired. See
crbug.com/275263. We have no immediate plans to fix this and the flakiness
dashboard shows timeouts for this test with both implementations.

The test was added to test a particular bug fix in the legacy animations
implementation (http://trac.webkit.org/changeset/117216) and has little to do
with forwards fill.

Most cases of forwards-fill testing (excluding play-state and events) is
covered by timing-model.html

This test therefore adds little value and should be removed. We can consider
reinstating it if and when the underlying bug is fixed.

BUG=275263
R=dstockwell

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=160286

[dstockwell, 2013-10-22 23:42:20]

Still can't see the change :(

[dstockwell, 2013-10-23 00:10:18]

lgtm

Description could also note that most cases of forwards-fill testing (exclusing
play-state and events) should be covered by timing-model.html

[commit-bot: I haz the power, 2013-10-23 00:18:23]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/steveblock@chromium.org/29363005/210001

[commit-bot: I haz the power, 2013-10-23 02:31:21]

Change committed as 160286