cf64a04acd
Patch by justincohen@, uploaded by phoglund@. This moves our trybots to 10.13+, which is required for xcode 10, which is now required by the build scripts. Bug: None Change-Id: I77d47bcb6696d290a397b098966ecc4ea1c0aeb9 Reviewed-on: https://webrtc-review.googlesource.com/97301 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24661}