03e504e5fa
- o is Object --> o != null. - Avoid specializing 'is Object' to instanceof. Change-Id: Id882666d547ee2e06c6b92dec5a8070302dd9415 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147686 Reviewed-by: Joshua Litt <joshualitt@google.com> Commit-Queue: Stephen Adams <sra@google.com>