Don't do any special normalization if a boilerplate contains function literals.

src/full-codegen/full-codegen.cc

Index: src/full-codegen/full-codegen.cc
diff --git a/src/full-codegen/full-codegen.cc b/src/full-codegen/full-codegen.cc
index 517d395e1af4c8cf15128ba721dd62061cbf9712..052a83a6574584df8fbbcbe0a21fc5cbfa0e4ae6 100644
--- a/src/full-codegen/full-codegen.cc
+++ b/src/full-codegen/full-codegen.cc
@@ -1508,8 +1508,7 @@ void FullCodeGenerator::VisitClassLiteral(ClassLiteral* lit) {
 
     EmitClassDefineProperties(lit);
 
-    // Set both the prototype and constructor to have fast properties, and also
-    // freeze them in strong mode.
+    // Set constructor to have fast properties.
     CallRuntimeWithOperands(Runtime::kFinalizeClassDefinition);
 
     if (lit->class_variable_proxy() != nullptr) {