cc67085501
This is used to support "expand selection" functionality in editors. Fixes https://github.com/Dart-Code/Dart-Code/issues/3332. Change-Id: I27929b152ef618fb8b57c43e6c6f6e21fe0966dd Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/200427 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>