Bump DevTools to version 2.16.0
Bump DevTools to version 2.16.0

Change-Id: I6ed3b2d065acef5df80b134aa31066cd5c1be097
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/253023
Commit-Queue: Kenzie Davisson <7294156c507c19d848723c5abf67fe40039705bb@google.com>
Reviewed-by: Ben Konyi <67ffcaedcc3dc3d87dddb9627b72dd41756b31b1@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk