Install the 'name' property in classes at runtime

src/factory.h

Index: src/factory.h
diff --git a/src/factory.h b/src/factory.h
index f8ae88021436af702d5333a9c37ae00baae72e30..7c210e6e482974ce4e7b59bfca8fe31c5a061c4f 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -694,6 +694,8 @@ class Factory final {
   Handle<Map> CreateStrictFunctionMap(FunctionMode function_mode,
                                       Handle<JSFunction> empty_function);
 
+  Handle<Map> CreateClassFunctionMap(Handle<JSFunction> empty_function);
+
   // Allocates a new JSMessageObject object.
   Handle<JSMessageObject> NewJSMessageObject(MessageTemplate::Template message,
                                              Handle<Object> argument,
@@ -773,6 +775,8 @@ class Factory final {
 
   void SetStrictFunctionInstanceDescriptor(Handle<Map> map,
                                            FunctionMode function_mode);
+
+  void SetClassFunctionInstanceDescriptor(Handle<Map> map);
 };
 
 }  // namespace internal