Update TestExpectations for two tests in virtual/rootlayerscrolls that now pass.

Update TestExpectations for two tests in virtual/rootlayerscrolls that now pass.

They failed because custom scrollbar styles didn't work correctly, which was
fixed in http://crrev.com/1274073002.

BUG=487948
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201131

[skobes, 2015-08-25 01:22:35]

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

[commit-bot: I haz the power, 2015-08-25 01:22:49]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1312943002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1312943002/1

[skobes, 2015-08-25 01:37:16]

skobes@chromium.org changed reviewers:
+ bokan@chromium.org

[commit-bot: I haz the power, 2015-08-25 02:10:40]

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

[commit-bot: I haz the power, 2015-08-25 02:10:41]

Dry run: This issue passed the CQ dry run.

[bokan, 2015-08-25 13:46:39]

lgtm

[skobes, 2015-08-25 14:02:40]

The CQ bit was checked by skobes@chromium.org

[commit-bot: I haz the power, 2015-08-25 14:02:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1312943002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1312943002/1

[commit-bot: I haz the power, 2015-08-25 14:13:54]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201131