Extract protocol_dart.dart APIs.

pkg/analysis_server/lib/src/search/search_domain.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 search.domain;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/constants.dart';
@@ skipping 57 matching lines @@
       var computer = new ElementReferencesComputer(searchEngine);
       List<protocol.SearchResult> results =
           await computer.compute(element, params.includePotential);
       bool isLast = identical(element, elements.last);
       _sendSearchNotification(searchId, isLast, results);
     });
     // respond
     var result = new protocol.SearchFindElementReferencesResult();
     if (elements.isNotEmpty) {
       result.id = searchId;
-      result.element = protocol.newElement_fromEngine(elements[0]);
+      result.element = protocol.convertElement(elements[0]);
     }
     _sendSearchResult(request, result);
   }
 
   Future findMemberDeclarations(protocol.Request request) async {
     var params =
         new protocol.SearchFindMemberDeclarationsParams.fromRequest(request);
     await server.onAnalysisComplete;
     // respond
     String searchId = (_nextSearchId++).toString();
@@ skipping 118 matching lines @@
   void _sendTypeHierarchyNull(protocol.Request request) {
     protocol.Response response =
         new protocol.SearchGetTypeHierarchyResult().toResponse(request.id);
     server.sendResponse(response);
   }
 
   static protocol.SearchResult toResult(SearchMatch match) {
     return protocol.newSearchResult_fromMatch(match);
   }
 }