The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6829aab5f8698d265317183be5e6e50e4551edf9

commit 6829aab5f8698d265317183be5e6e50e4551edf9
Author: James Darpinian <jdarpinian@chromium.org>
Date: Thu Nov 29 00:44:19 2018

Add suppressions for Pixel 2 and Nvidia Shield TV

We're not yet enabling the tests to run on the waterfall due to lack
of hardware, but the tests currently pass with these suppressions.

Bug: 709351,  809233 , 830046, 850257,  874620 
Bug: 905006, 906735, 906735, 906737, 906739
Bug: 906740, 906742,  906743 , 906745, 906752
Change-Id: I7362e52e9df8ae8f591d11a4a1e272fa2b81b0b6
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Reviewed-on: https://chromium-review.googlesource.com/c/1340275
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: James Darpinian <jdarpinian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611965}
[modify] https://crrev.com/6829aab5f8698d265317183be5e6e50e4551edf9/content/test/gpu/gpu_tests/webgl2_conformance_expectations.py

We need to triage this and figure out what's going on.