Clean up FunctionLiteral AST node cruft

src/parsing/preparser.cc

Index: src/parsing/preparser.cc
diff --git a/src/parsing/preparser.cc b/src/parsing/preparser.cc
index 4af7fca7b7160293229d8d8b9c47feb7526a28fc..b99181ee681c3928a7617fe08d12bc4342aadd4d 100644
--- a/src/parsing/preparser.cc
+++ b/src/parsing/preparser.cc
@@ -451,8 +451,8 @@ PreParser::Statement PreParser::ParseFunctionDeclaration(bool* ok) {
                                           : kFunctionNameValidityUnknown,
                        is_generator ? FunctionKind::kGeneratorFunction
                                     : FunctionKind::kNormalFunction,
-                       pos, FunctionLiteral::DECLARATION,
-                       FunctionLiteral::NORMAL_ARITY, language_mode(),
+                       pos, FunctionLiteral::kDeclaration,
+                       FunctionLiteral::kNormalArity, language_mode(),
                        CHECK_OK);
   return Statement::FunctionDeclaration();
 }