Can be useful for debugging logging.

Bug: angleproject:4959
Change-Id: I4bdb72b4c07979fecc2af0ca2a2b2e7cdab36b9f
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2360902
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>