Use AnalysisDriver.getCachedResult() for 'implemented' notification.

pkg/analysis_server/test/analysis_abstract.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.
 
 import 'dart:async';
 
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_constants.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart'
     hide AnalysisOptions;
@@ skipping 194 matching lines @@
     }
   }
 
   void removeGeneralAnalysisSubscription(GeneralAnalysisService service) {
     generalServices.remove(service);
     Request request = new AnalysisSetGeneralSubscriptionsParams(generalServices)
         .toRequest('0');
     handleSuccessfulRequest(request);
   }
 
+  void setPriorityFiles(List<String> files) {
+    var request = new AnalysisSetPriorityFilesParams(files).toRequest('0');
+    handleSuccessfulRequest(request);
+  }
+
   void setUp() {
     serverChannel = new MockServerChannel();
     resourceProvider = new MemoryResourceProvider();
     projectPath = resourceProvider.convertPath('/project');
     testFolder = resourceProvider.convertPath('/project/bin');
     testFile = resourceProvider.convertPath('/project/bin/test.dart');
     packageMapProvider = new MockPackageMapProvider();
     pluginManager = new TestPluginManager();
     server = createAnalysisServer();
     server.pluginManager = pluginManager;
@@ skipping 131 matching lines @@
   Future<List<Null>> stopAll() async {
     fail('Unexpected invocation of stopAll');
     return null;
   }
 
   @override
   void whitelistEverything() {
     fail('Unexpected invocation of whitelistEverything');
   }
 }