Remove references to Engine classes from protocol.dart

pkg/analysis_server/lib/src/services/refactoring/refactoring_internal.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 services.src.refactoring;
 
 import 'dart:async';
 import 'dart:collection';
 
-import 'package:analysis_server/src/protocol.dart' hide Element;
+import 'package:analysis_server/src/protocol_server.dart' hide Element;
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 
 /**
  * When a [Source] (a file) is used in more than one context, [SearchEngine]
  * will return separate [SearchMatch]s for each context. But in rename
@@ skipping 69 matching lines @@
       return other.file == file && other.range == range;
     }
     return false;
   }
 
   /**
    * Adds the [SourceEdit] to replace this reference.
    */
   void addEdit(SourceChange change, String newText, {String id}) {
     SourceEdit edit = createEdit(newText, id: id);
-    change.addElementEdit(element, edit);
+    doSourceChange_addElementEdit(change, element, edit);
   }
 
   /**
    * Returns the [SourceEdit] to replace this reference.
    */
   SourceEdit createEdit(String newText, {String id}) {
-    return new SourceEdit.range(range, newText, id: id);
+    return newSourceEdit_range(range, newText, id: id);
   }
 
   @override
   String toString() => '${file}@${range}';
 }