Cleanly release thread-local static persistents during termination GCs.
Should worker termination GCs instantiate static persistent singletons
while running finalizers, ensure that these are released.
Also, for PersistentHeapCollectionBase<>s registered as such thread-local
singletons, clear out their collection backing store along with the
persistent reference when they are released. The contents and backing
store of the collection should not be accessible after such a forceful
release operation.
R=haraken
BUG=
NOTRY=true
Review-Url: https://codereview.chromium.org/1957523007
Cr-Commit-Position: refs/heads/master@{#392263}
3 files changed
