Reify type params on map literals

test/codegen_expected/lib/html/history_test.js

 dart_library.library('lib/html/history_test', null, /* Imports */[
   'dart_sdk',
   'unittest'
 ], function load__history_test(exports, dart_sdk, unittest) {
   'use strict';
   const core = dart_sdk.core;
   const html = dart_sdk.html;
   const async = dart_sdk.async;
   const dart = dart_sdk.dart;
   const dartx = dart_sdk.dartx;
@@ skipping 26 matching lines @@
       unittest$.test('pushState', dart.fn(() => {
         src__matcher__expect.expect(dart.fn(() => {
           html.window[dartx.history][dartx.pushState](null, html.document[dartx.title], '?dummy');
           let length = html.window[dartx.history][dartx.length];
           html.window[dartx.history][dartx.pushState](null, html.document[dartx.title], '?foo=bar');
           src__matcher__expect.expect(html.window[dartx.location][dartx.href][dartx.endsWith]('foo=bar'), src__matcher__core_matchers.isTrue);
         }, VoidTodynamic()), expectation);
       }, VoidTodynamic()));
       unittest$.test('pushState with data', dart.fn(() => {
         src__matcher__expect.expect(dart.fn(() => {
-          html.window[dartx.history][dartx.pushState](dart.map({one: 1}), html.document[dartx.title], '?dummy');
-          src__matcher__expect.expect(html.window[dartx.history][dartx.state], src__matcher__core_matchers.equals(dart.map({one: 1})));
+          html.window[dartx.history][dartx.pushState](dart.map({one: 1}, core.String, core.int), html.document[dartx.title], '?dummy');
+          src__matcher__expect.expect(html.window[dartx.history][dartx.state], src__matcher__core_matchers.equals(dart.map({one: 1}, core.String, core.int)));
           html.window[dartx.history][dartx.pushState](null, html.document[dartx.title], '?foo=bar');
           src__matcher__expect.expect(html.window[dartx.location][dartx.href][dartx.endsWith]('foo=bar'), src__matcher__core_matchers.isTrue);
         }, VoidTodynamic()), expectation);
       }, VoidTodynamic()));
       unittest$.test('back', dart.fn(() => {
         src__matcher__expect.expect(dart.fn(() => {
           html.window[dartx.history][dartx.pushState](null, html.document[dartx.title], '?dummy1');
           html.window[dartx.history][dartx.pushState](null, html.document[dartx.title], '?dummy2');
           let length = html.window[dartx.history][dartx.length];
           src__matcher__expect.expect(html.window[dartx.location][dartx.href][dartx.endsWith]('dummy2'), src__matcher__core_matchers.isTrue);
@@ skipping 28 matching lines @@
           src__matcher__expect.expect(event[dartx.oldUrl], 'old');
           src__matcher__expect.expect(event[dartx.newUrl], 'new');
         }, VoidTodynamic()), expectation);
       }, VoidTodynamic()));
     }, VoidTovoid$()));
   };
   dart.fn(history_test.main, VoidTodynamic());
   // Exports:
   exports.history_test = history_test;
 });