Rerun "pub list" when pubspec.lock changes.

pkg/analysis_server/test/mocks.dart

 // Copyright (c) 2014, 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 mocks;
 
 import 'dart:async';
 import 'dart:io';
 
 @MirrorsUsed(targets: 'mocks', override: '*')
@@ skipping 405 matching lines @@
 
   // Not used.
   @override
   List<String> get uris => throw unimplemented;
 }
 
 /**
  * A mock [PackageMapProvider].
  */
 class MockPackageMapProvider implements PackageMapProvider {
+  /**
+   * Package map that will be returned by the next call to [computePackageMap].
+   */
   Map<String, List<resource.Folder>> packageMap = <String, List<resource.Folder>>{};
 
+  /**
+   * Dependency list that will be returned by the next call to [computePackageMap].
+   */
+  Set<String> dependencies = new Set<String>();
+
   @override
-  Map<String, List<resource.Folder>> computePackageMap(resource.Folder folder) {
-    return packageMap;
+  PackageMapInfo computePackageMap(resource.Folder folder) {
+    return new PackageMapInfo(packageMap, dependencies);
   }
 }