Enable enum and deferred import support

pkg/analysis_server/test/services/completion/imported_computer_test.dart

Index: pkg/analysis_server/test/services/completion/imported_computer_test.dart
diff --git a/pkg/analysis_server/test/services/completion/imported_computer_test.dart b/pkg/analysis_server/test/services/completion/imported_computer_test.dart
index c45323144af0b0ef740f12171714162edef32b7c..04d05690c4d8703b72ce5530fcadb8691282b88c 100644
--- a/pkg/analysis_server/test/services/completion/imported_computer_test.dart
+++ b/pkg/analysis_server/test/services/completion/imported_computer_test.dart
@@ -210,13 +210,6 @@ class ImportedComputerTest extends AbstractSelectorSuggestionTest {
     var context2 = AnalysisEngine.instance.createAnalysisContext();
     context2.sourceFactory =
         new SourceFactory([AbstractContextTest.SDK_RESOLVER, resourceResolver]);
-    {
-      AnalysisOptionsImpl options =
-          new AnalysisOptionsImpl.con1(context2.analysisOptions);
-      options.enableAsync = true;
-      options.enableEnum = true;
-      context2.analysisOptions = options;
-    }
     String content2 = 'class ClassFromAnotherContext { }';
     Source source2 =
         provider.newFile('/context2/foo.dart', content2).createSource();