Reset top-level class finalization

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index a0e5ccad6ab86b51695b00d14d19e32f8f042380..ad309daa27eed48a28f0af904eee4da571a7c3a4 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -3537,6 +3537,14 @@ void Class::set_is_finalized() const {
 }
 
 
+void Class::ResetFinalization() const {
+  ASSERT(IsTopLevel());
+  set_state_bits(ClassFinalizedBits::update(RawClass::kAllocated,
+                                            raw_ptr()->state_bits_));
+  set_state_bits(TypeFinalizedBit::update(false, raw_ptr()->state_bits_));
+}
+
+
 void Class::set_is_prefinalized() const {
   ASSERT(!is_finalized());
   set_state_bits(ClassFinalizedBits::update(RawClass::kPreFinalized,