Address Stephen's comments.

tests/html/indexeddb_1_test.dart

 #library('IndexedDB1Test');
 #import('../../lib/unittest/unittest.dart');
 #import('../../lib/unittest/html_config.dart');
 #import('dart:html');
 
 final String DB_NAME = 'Test';
 final String STORE_NAME = 'TEST';
 final String VERSION = '1';
 
 testReadWrite(key, value, check,
@@ skipping 16 matching lines @@
   step2(e) {
     var transaction = db.transaction(storeName, 'readonly');
     var request = transaction.objectStore(storeName).getObject(key);
     request.on.success.add(expectAsync1((e) {
       var object = e.target.result;
       check(value, object);
     }));
     request.on.error.add(fail);
   }
 
-  step1([e]) {
+  step1() {
     var transaction = db.transaction([storeName], 'readwrite');
     var request = transaction.objectStore(storeName).put(value, key);
     request.on.success.add(expectAsync1(step2));
     request.on.error.add(fail);
   }
 
   initDb(e) {
     db = e.target.result;
     if (version != db.version) {
       // TODO.  Some browsers do this the w3 way - passing the version to the
       // open call and listening to onversionchange.  Can we feature-detect the
       // difference and make it work?
       var request = db.setVersion(version);
       request.on.success.add(
         expectAsync1((e) {
           createObjectStore();
 
           var transaction = e.target.result;
-          transaction.on.complete.add(expectAsync1(step1));
+          transaction.on.complete.add(expectAsync1((e) => step1()));
           transaction.on.error.add(fail);
         })
       );
       request.on.error.add(fail);
     } else {
       step1();
     }
   }
 
   var request = window.indexedDB.open(dbName);
@@ skipping 73 matching lines @@
   test('test4',
             testReadWriteTyped(123, const [2, 3, 4], Expect.listEquals));
 }
 
 main() {
   useHtmlConfiguration();
 
   tests_dynamic();
   tests_typed();
 }