Rename ForEachStatement.iterator -> iterable.

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

Index: pkg/analysis_server/lib/src/services/correction/assist_internal.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/assist_internal.dart b/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
index 11c06feed9d87aff1654a314b3ca94ea6163f7a3..381b7b7874808c568e7ed458a9901773737e8856 100644
--- a/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
@@ -174,8 +174,8 @@ class AssistProcessor {
       ForEachStatement forEach = node.getAncestor((n) => n is ForEachStatement);
       int offset = node.offset;
       if (forEach != null &&
-          forEach.iterator != null &&
-          offset < forEach.iterator.offset) {
+          forEach.iterable != null &&
+          offset < forEach.iterable.offset) {
         declaredIdentifier = forEach.loopVariable;
       }
     }