Update to make Extract/Inline local and Extract Method refactorings work.

pkg/analysis_server/lib/src/analysis_server.dart

Index: pkg/analysis_server/lib/src/analysis_server.dart
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index 076e01c54cdd30cf67d49f651c1873d96f4f5c0b..e179dda68dba22c4cccf47ae47b14e3083ede318 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -801,6 +801,10 @@ class AnalysisServer {
    * Dart file or cannot be resolved.
    */
   Future<CompilationUnit> getResolvedCompilationUnit(String path) async {
+    if (options.enableNewAnalysisDriver) {
+      nd.AnalysisResult result = await getAnalysisResult(path);
+      return result?.unit;
+    }
     ContextSourcePair contextSource = getContextSourcePair(path);
     AnalysisContext context = contextSource.context;
     if (context == null) {