The problem seems to be that newer machines don't have iOS 10.3 SDK installed. And this dimension is the only thing that discerns older machines from newer ones. TBR: phoglund@webrtc.org Bug: chromium:867367 Change-Id: I9dd2e1d027aff59ca7a43260ea2e4e61d583668e Reviewed-on: https://webrtc-review.googlesource.com/90400 Commit-Queue: Oleh Prypin <oprypin@webrtc.org> Reviewed-by: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24094}