Add automated VR latency tester
Adds a script to automatically measure the motion-to-photon/app latency
for VR. This requires specialized hardware to measure the latency and move
the device during the test, so it is only meant to be run on our swarming
bot that has been set up to work with it.
Has not yet been set up to run continuously, but currently works if manually
triggered to run on our bot, so can be useful for teammates that do not have
the necessary hardware to measure latency themselves.
BUG=708747
Review-Url: https://codereview.chromium.org/2799783002
Cr-Commit-Position: refs/heads/master@{#464230}
5 files changed
