[heap] Ensure finalization of incremental marking even if all allocations

src/heap/incremental-marking.h

Index: src/heap/incremental-marking.h
diff --git a/src/heap/incremental-marking.h b/src/heap/incremental-marking.h
index c2290c4d8206ee39907d7d327baca35cb9e5db46..7ce0ae2379df4c19a0b95733b1070023d3550631 100644
--- a/src/heap/incremental-marking.h
+++ b/src/heap/incremental-marking.h
@@ -66,6 +66,11 @@ class IncrementalMarking {
     return request_type_ == FINALIZATION && !finalize_marking_completed_;
   }
 
+  inline bool NeedsFinalization() {
+    return IsMarking() &&
+           (request_type_ == FINALIZATION || request_type_ == COMPLETE_MARKING);
+  }
+
   GCRequestType request_type() const { return request_type_; }
 
   void reset_request_type() { request_type_ = NONE; }