Make server use the common protocol classes

pkg/analysis_server/test/protocol_server_test.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 test.computer.element;
-
 import 'dart:mirrors';
 
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/protocol_server.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/dart/ast/ast.dart' as engine;
 import 'package:analyzer/dart/element/element.dart' as engine;
 import 'package:analyzer/dart/element/type.dart' as engine;
 import 'package:analyzer/error/error.dart' as engine;
 import 'package:analyzer/src/error/codes.dart' as engine;
 import 'package:analyzer/src/generated/source.dart' as engine;
+import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:typed_mock/typed_mock.dart';
 
 import 'mocks.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisErrorTest);
     defineReflectiveTests(EnumTest);
@@ skipping 120 matching lines @@
     // use SearchResultKind inside the analysis server?
     new EnumTester<MatchKind, SearchResultKind>()
         .run(newSearchResultKind_fromEngine);
   }
 }
 
 /**
  * Helper class for testing the correspondence between an analysis engine enum
  * and an analysis server API enum.
  */
-class EnumTester<EngineEnum, ApiEnum extends Enum> {
+class EnumTester<EngineEnum, ApiEnum> {
   /**
    * Test that the function [convert] properly converts all possible values of
    * [EngineEnum] to an [ApiEnum] with the same name, with the exceptions noted
    * in [exceptions].  For each key in [exceptions], if the corresponding value
    * is null, then we check that converting the given key results in an error.
    * If the corresponding value is an [ApiEnum], then we check that converting
    * the given key results in the given value.
    */
   void run(ApiEnum convert(EngineEnum value),
       {Map<EngineEnum, ApiEnum> exceptions: const {}}) {
@@ skipping 14 matching lines @@
         if (expectedResult == null) {
           expect(() {
             convert(engineValue);
           }, throws);
         } else {
           ApiEnum apiValue = convert(engineValue);
           expect(apiValue, equals(expectedResult));
         }
       } else {
         ApiEnum apiValue = convert(engineValue);
-        expect(apiValue.name, equals(enumName));
+        expect((apiValue as dynamic).name, equals(enumName));
       }
     });
   }
 }