VR tests are intermittently failing by hitting an assert in VrShellDelegate's VSyncEstimator. This is similar to the problem fixed in  Issue 741090 , but I've only seen this one pop on Pixel devices. I've also only seen this with the Daydream View paired, but not sure if it's limited to that or just haven't seen it with Cardboard yet.

Example failures:
https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Fchromium.fyi%2FAndroid_VR_Tests%2F9715%2F%2B%2Frecipes%2Fsteps%2Fchrome_public_test_vr_apk__2_%2F0%2Fsteps%2Fchrome_public_test_vr_apk.chrome_public_test_vr_apk__2_%2F0%2Fstdout

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Fchromium.fyi%2FAndroid_VR_Tests%2F9761%2F%2B%2Frecipes%2Fsteps%2Fchrome_public_test_vr_apk__2_%2F0%2Fsteps%2Fchrome_public_test_vr_apk.chrome_public_test_vr_apk__2_%2F0%2Fstdout