[heap] Limit friendship of the Heap class to essentials.

src/deoptimizer.cc

Index: src/deoptimizer.cc
diff --git a/src/deoptimizer.cc b/src/deoptimizer.cc
index 485785fa0c9bea1b628db2b0cf9cf840bec72dcc..490237e7bbdb8224993594ed097c5ae4c76d56d2 100644
--- a/src/deoptimizer.cc
+++ b/src/deoptimizer.cc
@@ -2252,7 +2252,7 @@ Handle<FixedArray> MaterializedObjectStore::EnsureStackEntries(int length) {
   for (int i = array->length(); i < length; i++) {
     new_array->set(i, isolate()->heap()->undefined_value());
   }
-  isolate()->heap()->public_set_materialized_objects(*new_array);
+  isolate()->heap()->SetRootMaterializedObjects(*new_array);
   return new_array;
 }