60b217ff2d
Also cleans up some references to Observatory in various places. Work towards https://github.com/dart-lang/sdk/issues/50233 TEST=N/A CoreLibraryReviewExempt: Not modifying public core libraries. Change-Id: I1f36b4e6f1fd9a59a579d719aafa599906eedb3f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/429141 Reviewed-by: Siva Annamalai <asiva@google.com> Commit-Queue: Ben Konyi <bkonyi@google.com>