Deprecate FileUriResolver and RelativeFileUriResolver in source_io.dart, replace the usages with Re…

pkg/analysis_server/test/context_manager_test.dart

Index: pkg/analysis_server/test/context_manager_test.dart
diff --git a/pkg/analysis_server/test/context_manager_test.dart b/pkg/analysis_server/test/context_manager_test.dart
index db85fcd6c5fe7cbaa2e8879a55f3c264f8bd96ed..1ed312fa6eae9a4695aa963af1993d6bc9400179 100644
--- a/pkg/analysis_server/test/context_manager_test.dart
+++ b/pkg/analysis_server/test/context_manager_test.dart
@@ -8,6 +8,7 @@ import 'dart:collection';
 
 import 'package:analysis_server/src/context_manager.dart';
 import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
 import 'package:analyzer/source/embedder.dart';
@@ -2667,7 +2668,7 @@ class TestContextManagerCallbacks extends ContextManagerCallbacks {
       }
     }
     resolvers.addAll(disposition.createPackageUriResolvers(resourceProvider));
-    resolvers.add(new FileUriResolver());
+    resolvers.add(new ResourceUriResolver(PhysicalResourceProvider.INSTANCE));
     currentContext.analysisOptions = options;
     currentContext.sourceFactory =
         new SourceFactory(resolvers, disposition.packages);