Check in codegen test expectations.

test/codegen/expect/language/parameter_metadata_test_02_multi.js

+dart_library.library('language/parameter_metadata_test_02_multi', null, /* Imports */[
+  'dart_sdk'
+], function load__parameter_metadata_test_02_multi(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const parameter_metadata_test_02_multi = Object.create(null);
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.functionType(dart.dynamic, [dart.dynamic])))();
+  let dynamicAndFnTodynamic = () => (dynamicAndFnTodynamic = dart.constFn(dart.functionType(dart.dynamic, [dart.dynamic, dynamicTodynamic()])))();
+  let FnTodynamic = () => (FnTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dynamicAndFnTodynamic()])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  parameter_metadata_test_02_multi.test = function(f) {
+  };
+  dart.fn(parameter_metadata_test_02_multi.test, FnTodynamic());
+  parameter_metadata_test_02_multi.main = function() {
+    parameter_metadata_test_02_multi.test(null);
+  };
+  dart.fn(parameter_metadata_test_02_multi.main, VoidTodynamic());
+  // Exports:
+  exports.parameter_metadata_test_02_multi = parameter_metadata_test_02_multi;
+});