Remove more references to FileBasedSource

pkg/analyzer/test/generated/inheritance_manager_test.dart

Index: pkg/analyzer/test/generated/inheritance_manager_test.dart
diff --git a/pkg/analyzer/test/generated/inheritance_manager_test.dart b/pkg/analyzer/test/generated/inheritance_manager_test.dart
index 06d6c98b4994ae15ec3a1efbe0f0d5792650ce39..1ac3a31a93403c6fc67d9b38e13fcbafe9a6502d 100644
--- a/pkg/analyzer/test/generated/inheritance_manager_test.dart
+++ b/pkg/analyzer/test/generated/inheritance_manager_test.dart
@@ -8,6 +8,7 @@ import 'dart:collection';
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/resolver/inheritance_manager.dart';
 import 'package:analyzer/src/generated/engine.dart';
@@ -19,6 +20,7 @@ import 'package:analyzer/src/generated/testing/ast_factory.dart';
 import 'package:analyzer/src/generated/testing/element_factory.dart';
 import 'package:analyzer/src/generated/testing/test_type_provider.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart';
+import 'package:analyzer/src/source/source_resource.dart';
 import 'package:unittest/unittest.dart';
 
 import '../reflective_tests.dart';
@@ -1306,9 +1308,10 @@ class InheritanceManagerTest {
    * @return the inheritance manager that was created
    */
   InheritanceManager _createInheritanceManager() {
-    AnalysisContext context = AnalysisContextFactory.contextWithCore();
-    FileBasedSource source =
-        new FileBasedSource(FileUtilities2.createFile("/test.dart"));
+    MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
+    AnalysisContext context = AnalysisContextFactory.contextWithCore(
+        resourceProvider: resourceProvider);
+    Source source = new FileSource(resourceProvider.getFile("/test.dart"));
     CompilationUnitElementImpl definingCompilationUnit =
         new CompilationUnitElementImpl("test.dart");
     definingCompilationUnit.librarySource =