The command line flag "--one-frame-only" will force the ANGLE perf
tests to stop execution after one iteration. This will help test
correctness while giving a much faster run time. Currently they take
about ten minutes on the bots, this should hopefully give a 10x
improvement for correctness-only testing.

Requires http://crrev.com/c/677306 to land first.

BUG=725308,765321

Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I9bbbe3a2c3100fd4d43759382cd62ec2f45ab33b
Reviewed-on: https://chromium-review.googlesource.com/677307


Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504271}