a3e3328d95
This also includes some renaming that I missed in the previous CL when ValueExtractor became ValueGenerator. Change-Id: I289fbcf679eef2e3e3661167db533a2ba481176d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/163725 Reviewed-by: Phil Quitslund <pquitslund@google.com> Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>