using unittest via package import

tests/html/indexeddb_3_test.dart

 library IndexedDB3Test;
-import '../../pkg/unittest/lib/unittest.dart';
-import '../../pkg/unittest/lib/html_config.dart';
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_config.dart';
 import 'dart:async';
 import 'dart:html' as html;
 import 'dart:indexed_db';
 
 // Read with cursor.
 
 const String DB_NAME = 'Test3';
 const String STORE_NAME = 'TEST';
 const int VERSION = 1;
 
@@ skipping 91 matching lines @@
     });
     test('readAll1', () {
       return readAllViaCursor(db);
     });
 
     test('readAll2', () {
       return readAllReversedViaCursor(db);
     });
   }
 }