This new script runs the ANGLE trace tests with capture enabled to
generate updated replay cpp files. This allows us to update our
traces files to a new file format in one step.

Trace metadata (currently only the default FBO format) is preserved
between re-traces.

Currently only desktop-based retracing is supported. This means a
couple traces that require specific extensions don't run on all
platforms.

Bug: angleproject:5134
Change-Id: I7c923d89e33c18285ab36a7cee91f2fb735758eb
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2488130
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>
Reviewed-by: Cody Northrop <cnorthrop@google.com>