Fixes for formatting and complete completion stub.

pkg/analysis_server/lib/src/edit/edit_domain.dart

Index: pkg/analysis_server/lib/src/edit/edit_domain.dart
diff --git a/pkg/analysis_server/lib/src/edit/edit_domain.dart b/pkg/analysis_server/lib/src/edit/edit_domain.dart
index 7e1a9883219b4ab1d2d70456620de87957e4116f..5906cd10abbc333c7cd2acdc8d97efd419c25fc7 100644
--- a/pkg/analysis_server/lib/src/edit/edit_domain.dart
+++ b/pkg/analysis_server/lib/src/edit/edit_domain.dart
@@ -72,7 +72,11 @@ class EditDomainHandler implements RequestHandler {
     String unformattedSource;
     try {
       Source source = server.resourceProvider.getFile(file).createSource();
-      unformattedSource = server.overlayState.getContents(source);
+      if (server.options.enableNewAnalysisDriver) {
+        unformattedSource = server.fileContentOverlay[file];
+      } else {
+        unformattedSource = server.overlayState.getContents(source);
+      }
       unformattedSource ??= source.contents.data;
     } catch (e) {
       return new Response.formatInvalidFile(request);