Add NativeFonts job for Mac 10.15 CPU

Change-Id: Icf81d2fd50e060e9e9ca2876f5ed7192d0d18d7a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/258885
Commit-Queue: Ben Wagner aka dogben <benjaminwagner@google.com>
Auto-Submit: Ben Wagner aka dogben <benjaminwagner@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
3 files changed