a67fd37193
Display progress when loading a snapshot from a file. Change-Id: I6802998308c0b6c552ffea76439fe18edd34c99c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/130460 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Ben Konyi <bkonyi@google.com>