GitLab

BUG=643746, 604369
CQ_INCLUDE_TRYBOTS=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

Committed: https://crrev.com/4a4522e8d9a3ae704b7a17ebb412d2a94aa820c2
Review-Url: https://codereview.chromium.org/2555693005
Cr-Original-Commit-Position: refs/heads/master@{#437771}
Cr-Commit-Position: refs/heads/master@{#438165}