Dartifying dart:html type names.

tests/html/indexeddb_2_test.dart

 library IndexedDB1Test;
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_config.dart';
-import 'dart:html';
+import 'dart:html' as html;
+import 'dart:indexed_db' as idb;
 import 'dart:collection';
 import 'utils.dart';
 
 // Write and re-read Maps: simple Maps; Maps with DAGs; Maps with cycles.
 
 const String DB_NAME = 'Test';
 const String STORE_NAME = 'TEST';
 const int VERSION = 1;
 
 testReadWrite(key, value, check,
@@ skipping 44 matching lines @@
           transaction.on.error.add(fail);
         })
       );
       request.on.error.add(fail);
     } else {
       step1();
     }
   }
 
   openDb(e) {
-    var request = window.indexedDB.open(dbName, version);
+    var request = html.window.indexedDB.open(dbName, version);
     expect(request, isNotNull);
     request.on.success.add(expectAsync1(initDb));
     request.on.error.add(fail);
-    if (request is IDBOpenDBRequest) {
+    if (request is idb.OpenDBRequest) {
       // New upgrade protocol.  Old API has no 'upgradeNeeded' and uses
       // setVersion instead.
       request.on.upgradeNeeded.add((e) {
           guardAsync(() {
               createObjectStore(e.target.result);
             });
         });
     }
   }
 
   // Delete any existing DB.
-  var deleteRequest = window.indexedDB.deleteDatabase(dbName);
+  var deleteRequest = html.window.indexedDB.deleteDatabase(dbName);
   deleteRequest.on.success.add(expectAsync1(openDb));
   deleteRequest.on.error.add(fail);
 };
 
 
 main() {
   useHtmlConfiguration();
 
   var obj1 = {'a': 100, 'b': 's'};
   var obj2 = {'x': obj1, 'y': obj1};  // DAG.
@@ skipping 28 matching lines @@
   go('test_simple', obj1);
   go('test_DAG', obj2);
   go('test_cycle', obj3);
   go('test_simple_splay', obj4);
   go('const_array_1', const [const [1], const [2]]);
   go('const_array_dag', const [const [1], const [1]]);
   go('array_deferred_copy', [1,2,3, obj3, obj3, 6]);
   go('array_deferred_copy_2', [1,2,3, [4, 5, obj3], [obj3, 6]]);
   go('cyclic_list', cyclic_list);
 }