74846b96c3
Existing Monitor is not reentrable, doesn't support acquiring it if it is already acquired by this thread. TEST=ReentrantMonitorAllowsReentrance Change-Id: Id74479388a99ca907bca6e379c3a7e08191e841b Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/436542 Commit-Queue: Alexander Aprelev <aam@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com>