tree 485ab790e2766f78dfc451f50cee6dc5fa00c4f1
parent dde14310f48bf7d67d9f16ab9911837940f020ac
author Thomas Van Lenten <thomasvl@google.com> 1541172874 -0400
committer Thomas Van Lenten <thomasvl@google.com> 1541179713 -0400

Let the 9.4 migrator migrate the Swift source.

No changes were needed, but since the Xcode projects pick up the updated
setting, the tests require a newer Xcode that supports Swift 4.

This is being done because Xcode 10 starting warning about Swift 3 support
going away in the future, so we might as well do the updates since most
folks shouldn't be on those really old Xcode versions any more.