Fix gamepad/page-visibility.html flakiness.

Fix gamepad/page-visibility.html flakiness.

If the running of the individual tests took longer, we ran the risk
of having a bail-out timer fire and report foul; in debug builds
typically. Not a failure condition to be slow(er) here.

Remove that bail-out timer; should the delivery of gamepad events somehow
not be complete, just let the test time out & report failure that way.

R=haraken
BUG=386846
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=188950

[sof, 2015-01-26 10:41:36]

sigbjornf@opera.com changed reviewers:
+ haraken@chromium.org, mkwst@chromium.org

[sof, 2015-01-26 10:41:36]

Please take a look.

(Ran across the flakiness while looking at crbug.com/357071 )

[haraken, 2015-01-26 11:24:43]

LGTM

[sof, 2015-01-26 11:37:56]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2015-01-26 11:38:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/872373002/1

[commit-bot: I haz the power, 2015-01-26 11:57:19]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=188950