This reverts commit 1288c59c352c18bddef9bc7783a8bde38d30f5a4. Reason for revert: 'ios_api_framework' builder uses global `lipo` which is not available Original change's description: > Switch to using CIPD for downloading xcode; xcode 9.0 -> 9.2. > > Bug: chromium:821309 > Change-Id: If304e08c2f7b1beb26325c334c2f1894c5f290f7 > Reviewed-on: https://webrtc-review.googlesource.com/61421 > Commit-Queue: Patrik Höglund <phoglund@webrtc.org> > Reviewed-by: Oleh Prypin <oprypin@webrtc.org> > Cr-Commit-Position: refs/heads/master@{#22397} TBR=phoglund@webrtc.org,oprypin@webrtc.org Change-Id: I8fbfc7872eb6e6c3f0e18dec39e130d5af9e3cd8 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: chromium:821309 Reviewed-on: https://webrtc-review.googlesource.com/61460 Reviewed-by: Oleh Prypin <oprypin@webrtc.org> Commit-Queue: Oleh Prypin <oprypin@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22399}