Fix Function subclassing.

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index 4a42f0e71e662ec18b05174032611411788cd315..8d582549e64927b5b9515796f6c38e74eaddd48f 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -1286,6 +1286,10 @@ void TransitionArray::PrintTransitions(std::ostream& os, Object* transitions,
     } else if (key == heap->elements_transition_symbol()) {
       os << "(transition to " << ElementsKindToString(target->elements_kind())
          << ")";
+    } else if (key == heap->strict_function_transition_symbol()) {
+      os << " (transition to strict function)";
+    } else if (key == heap->strong_function_transition_symbol()) {
+      os << " (transition to strong function)";
     } else if (key == heap->observed_symbol()) {
       os << " (transition to Object.observe)";
     } else {