New header required to compile. It mirrors one used by
our perf tests, but this one will remain basic.

Test: Replay a new trace
Bug: angleproject:4845
Change-Id: If42bba6a91bf37ed063b5828b4cbc80373108b2f
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2327292Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Cody Northrop <cnorthrop@google.com>