Add test of unittests.

tests/compiler/dart2js/analyze_api_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyze_api;
 
 import 'package:sdk_library_metadata/libraries.dart';
 import 'analyze_helper.dart';
 import "package:async_helper/async_helper.dart";
 
@@ skipping 11 matching lines @@
 const Map<String, List<String>> WHITE_LIST = const {
 };
 
 void main() {
   var uriList = new List<Uri>();
   libraries.forEach((String name, LibraryInfo info) {
     if (info.documented) {
       uriList.add(new Uri(scheme: 'dart', path: name));
     }
   });
-  asyncTest(() => analyze(uriList, WHITE_LIST));
+  asyncTest(() => analyze(uriList, WHITE_LIST, mode: AnalysisMode.ALL));
 }