Implement some missed methods for summary2 support

Change-Id: I18cbec26512c4d660b6dbc3ea1e5325ff032a8d2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113753
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>

https://dart.googlesource.com/sdk/+/56b3dede78f91d372a1f573848dd7dcaec84d62f
1 file changed
tree: b17d95584ba51fe2176dcd5c04e1bfec03c6d7b9
  1. commits.json