8a670d773b
This CL introduces 'tags' as a way to distinguish different setups and be able to throw away previous state when it cannot be used. These tags are - for now - basically filled up with the roots used for the multi root filesystem, the idea being, that if they have changed we cannot reuse the old state. Change-Id: I19e069513ce3836f5bc6abf047e4359836fc7e09 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114945 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Jens Johansen <jensj@google.com>