We can use this to re-capture replays.

Bug: angleproject:5134
Change-Id: I765e0bbb66cfdd822ffa981f2b5533157d024cac
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2449161
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>
Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>