Issue 21071. Generate posix-style relative URIs.

pkg/analysis_server/test/services/refactoring/move_file_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.services.refactoring.move_files;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
@@ skipping 186 matching lines @@
    */
   Future _assertSuccessfulRefactoring() {
     return assertRefactoringConditionsOK().then((_) {
       return refactoring.createChange().then((SourceChange refactoringChange) {
         this.refactoringChange = refactoringChange;
       });
     });
   }
 
   void _createRefactoring(String newName) {
-    refactoring = new MoveFileRefactoring(searchEngine, context, testSource);
+    refactoring = new MoveFileRefactoring(
+        provider.pathContext,
+        searchEngine,
+        context,
+        testSource);
     refactoring.newFile = newName;
   }
 
   void _performAnalysis() {
     while (true) {
       AnalysisResult result = context.performAnalysisTask();
       if (!result.hasMoreWork) {
         break;
       }
       for (ChangeNotice notice in result.changeNotices) {
         if (notice.source.fullName.startsWith('/project/')) {
           index.indexUnit(context, notice.compilationUnit);
         }
       }
     }
   }
 }