GitLab

Make sure that ToString() would produce distinct strings for
distinct tokens.

Bug: 815217
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel
Change-Id: I38ea5bfad061610e95945eb31187cb3c02f737cf
Reviewed-on: https://chromium-review.googlesource.com/934824Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Elad Alon <eladalon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#539115}