Write export labels into replay functions.
Write export labels into replay functions.

This will allow them to be recaptured in such a way that they
can be built into separate modules.

This is building towards separate binaries for each trace.

Bug: angleproject:5133
Change-Id: I306204e69a6d754282193f44055dbc85ccb01e9b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2506491
Commit-Queue: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Reviewed-by: Cody Northrop <94770d7fe1cce6ea0791fa9927c1107de4d2e37b@google.com>
Reviewed-by: Courtney Goeltzenleuchter <aa371ec5c940a0ded89f7ed95bce84faebcf51df@google.com>

ppy/angle,ppy/angle,ppy/angle,ppy/angle