GitLab

Since Chrome can be build for "catalyst" environment, add the key
SUPPORTS_MACCATALYST to the generated Xcode project.

Bug: 1138425
Change-Id: Idb56060a53266f5b9a4ab6a2328970cfa84973de
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518858Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824397}