Add documentation comments for enum and enum values. Resynthesize in analyzer.

pkg/analyzer/test/src/summary/resynthesize_common.dart

Index: pkg/analyzer/test/src/summary/resynthesize_common.dart
diff --git a/pkg/analyzer/test/src/summary/resynthesize_common.dart b/pkg/analyzer/test/src/summary/resynthesize_common.dart
index 3dd04d41b917e7a3b0e9a96994ab2c663bd3e59a..e247070a4c4137e772725ccef8637f241bbbe0ae 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_common.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_common.dart
@@ -5240,18 +5240,22 @@ enum E {
     var library = await checkLibrary('''
 enum E {
   /**
-   * Docs
+   * aaa
    */
-  v
+  a,
+  /// bbb
+  b
 }''');
     checkElementText(library, r'''
 enum E {
   synthetic final int index;
   synthetic static const List<E> values;
   /**
-   * Docs
+   * aaa
    */
-  static const E v;
+  static const E a;
+  /// bbb
+  static const E b;
 }
 ''');
   }