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This CL only covers //chrome.  Will migrate the other uses in sibling CLs.

R=sky@chromium.org

Bug: 773850
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: I38a114dab508fb0a0d1212bd64457be0c4619727
Reviewed-on: https://chromium-review.googlesource.com/822033
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523656}