Trace Replay: Fix UBO access in the trace fixture. This bug was from the rework to use encapsulated functions. Bug: angleproject:7731 Bug: b/262815739 Change-Id: I3965c04439c8f4c2e67708bd2536b8beb3270880 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4144178 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Roman Lavrov <romanl@google.com>