* Revise uses of ObjectPtr::GetClassId which now handles Smis.
* Accomodate for _Map and _Set moved to dart:_compact_hash.
Also, a bit of code cleanup in the interpreter:
* Replace RAW_CAST with Handle::RawCast
* Replace NULL with nullptr.
TEST=Manual
Change-Id: Ib49f66cfcbac26200294d3ee55edc1b99c94fcf6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380685
Auto-Submit: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>