Better casting of for-in loops.

pkg/analyzer/test/src/task/strong/inferred_type_test.dart

Index: pkg/analyzer/test/src/task/strong/inferred_type_test.dart
diff --git a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
index 3290d9bde153dfd33c72a15de0d7af8fa5b4abc2..58944b633486eaa682940d335c4d7a19050239df 100644
--- a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
+++ b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
@@ -484,12 +484,12 @@ main() {
         }
 
         Iterable iter = list;
-        for (Foo x in /*warning:DOWN_CAST_COMPOSITE*/iter) {
+        for (Foo /*info:DYNAMIC_CAST*/x in iter) {
           var y = x;
         }
 
         dynamic iter2 = list;
-        for (Foo x in /*warning:DOWN_CAST_COMPOSITE*/iter2) {
+        for (Foo /*info:DYNAMIC_CAST*/x in /*info:DYNAMIC_CAST*/iter2) {
           var y = x;
         }