tree d3e3ad309681615a97216bc370f870ccaf052693
parent 431bbf510dec8e10f607f7fff3f80a1ae84a737f
author Petr Hosek <phosek@google.com> 1602786730 -0700
committer Petr Hosek <phosek@google.com> 1602792414 +0000

Use 10.15 Mac builders

This is necessary to use the latest Xcode.

Change-Id: I57e15d29ade3920a1d5734f8ec47a52eea49a97d
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/10260
Reviewed-by: Scott Graham <scottmg@chromium.org>