Issue 21662. Fix 'Sort Members' when both directives and declarations are updated.

pkg/analysis_server/lib/src/services/correction/sort_members.dart

Index: pkg/analysis_server/lib/src/services/correction/sort_members.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/sort_members.dart b/pkg/analysis_server/lib/src/services/correction/sort_members.dart
index f74b77c87262d7b938142f8bf960e1e5bc6ee651..5732c6021e6322bea1ae0105a809f14dfb6fd7cf 100644
--- a/pkg/analysis_server/lib/src/services/correction/sort_members.dart
+++ b/pkg/analysis_server/lib/src/services/correction/sort_members.dart
@@ -61,8 +61,8 @@ class MemberSorter {
    */
   List<SourceEdit> sort() {
     _sortClassesMembers();
-    _sortUnitDirectives();
     _sortUnitMembers();
+    _sortUnitDirectives();

[Paul Berry, 2014/11/24 14:24:59]

It would be nice to have a short comment above this line explaining why it needs
to come last, e.g.

"Must sort unit directives last because it may insert newlines, which would
confuse the offsets used by the other sort functions"

[scheglov, 2014/11/24 15:50:00]

Done.

     // prepare edits
     List<SourceEdit> edits = <SourceEdit>[];
     if (code != initialCode) {