GitLab

mac-arm64: Create a universal .app from same-version x86_64 and arm64

This creates a script, universalizer.py, which can create a universal
.app by combining same-version x86_64 and arm64 .apps.

Code-Word: calamity
Bug: 1142017
Change-Id: I758469759aa0d4b9bd4559878943cdab3e6d3eb6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2515521
Commit-Queue: Mark Mentovai <mark@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824159}