Extend the duration of the tough_filters_cases page set.

Extend the duration of the tough_filters_cases page set.

Nexus10 is currently timing out before rendering the first frame of
filter_terrain.svg. By extending the test from 5 to 10 seconds, we
should give it more of a chance to render. This should also reduce
noise on the other platforms.

R=dtu@chromium.org
BUG=402884
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=289495

[Stephen White, 2014-08-12 17:19:01]

dtu@: PTAL. Thanks!

[dtu, 2014-08-13 17:05:57]

The CQ bit was checked by dtu@chromium.org

[dtu, 2014-08-13 17:05:57]

lgtm

[commit-bot: I haz the power, 2014-08-13 17:06:56]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/senorblanco@chromium.org/462143002/1

[commit-bot: I haz the power, 2014-08-13 23:10:19]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  linux_gpu_triggered_tests on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/linux_gpu_trigger...)
  android_aosp on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_aosp/bu...)
  android_dbg on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_dbg/bui...)
  mac_chromium_rel_swarming on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[commit-bot: I haz the power, 2014-08-14 08:45:21]

Committed patchset #1 (1) as 289495