tree de8deac1e375e5388851cc417958dc4352d7e2e7
parent 7e284d4406c468f606094b3d7c13e879a8ea3975
author Alexander Thomas <athom@google.com> 1528393152 +0000
committer Alexander Thomas <athom@google.com> 1528393152 +0000

[infra] Add test matrix documentation

Change-Id: I71be9e3a8ea5419e16bf065c69235a9813b98886
Reviewed-on: https://dart-review.googlesource.com/36483
Reviewed-by: Bob Nystrom <rnystrom@google.com>