Force full GC whenever CollectAllGarbage is meant to trigger a full GC.

src/heap/mark-compact.h

Index: src/heap/mark-compact.h
diff --git a/src/heap/mark-compact.h b/src/heap/mark-compact.h
index 29f81ded5a26c356724af5b1efe58af54c4da4e5..5d5b2a79f7125bccb2b9604842144f3264db3760 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -659,6 +659,10 @@ class MarkCompactCollector {
 
   bool abort_incremental_marking() const { return abort_incremental_marking_; }
 
+  bool finalize_incremental_marking() const {
+    return finalize_incremental_marking_;
+  }
+
   bool is_compacting() const { return compacting_; }
 
   MarkingParity marking_parity() { return marking_parity_; }
@@ -749,6 +753,8 @@ class MarkCompactCollector {
 
   bool abort_incremental_marking_;
 
+  bool finalize_incremental_marking_;
+
   MarkingParity marking_parity_;
 
   // True if we are collecting slots to perform evacuation from evacuation