Clean up package imports and library names

pkg/analyzer/test/src/task/html_work_manager_test.dart

 // Copyright (c) 2015, 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 test.src.task.html_work_manager_test;
+library analyzer.test.src.task.html_work_manager_test;
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show
         AnalysisEngine,
         AnalysisErrorInfo,
         AnalysisErrorInfoImpl,
         CacheState,
         ChangeNoticeImpl,
         InternalAnalysisContext;
@@ skipping 324 matching lines @@
     return new AnalysisErrorInfoImpl(
         errors, getCacheEntry(source).getValue(LINE_INFO));
   }
 
   @override
   ChangeNoticeImpl getNotice(Source source) {
     return _pendingNotices.putIfAbsent(
         source, () => new ChangeNoticeImpl(source));
   }
 }