Add remaining @@toStringTag symbols to builtins

src/heap-snapshot-generator.cc

Index: src/heap-snapshot-generator.cc
diff --git a/src/heap-snapshot-generator.cc b/src/heap-snapshot-generator.cc
index c4f9600ba7072c62608d9cc509cce8ca9045203e..680e1cc4ad74b748aca7952dc30672973a2eae08 100644
--- a/src/heap-snapshot-generator.cc
+++ b/src/heap-snapshot-generator.cc
@@ -1711,11 +1711,11 @@ bool V8HeapExplorer::ExtractAccessorPairProperty(
   AccessorPair* accessors = AccessorPair::cast(callback_obj);
   Object* getter = accessors->getter();
   if (!getter->IsOddball()) {
-    SetPropertyReference(js_obj, entry, String::cast(key), getter, "get %s");
+    SetPropertyReference(js_obj, entry, Name::cast(key), getter, "get %s");
   }
   Object* setter = accessors->setter();
   if (!setter->IsOddball()) {
-    SetPropertyReference(js_obj, entry, String::cast(key), setter, "set %s");
+    SetPropertyReference(js_obj, entry, Name::cast(key), setter, "set %s");
   }
   return true;
 }