Avoid name collision with reserved word

pkg/intl/test/message_extraction/foo_messages_all.dart

Index: pkg/intl/test/message_extraction/foo_messages_all.dart
diff --git a/pkg/intl/test/message_extraction/foo_messages_all.dart b/pkg/intl/test/message_extraction/foo_messages_all.dart
index 829df89885c78cdbc593c38e489b1c319a73d7b0..1568a649950c02eb744bfb65c56164eb5f8292e8 100644
--- a/pkg/intl/test/message_extraction/foo_messages_all.dart
+++ b/pkg/intl/test/message_extraction/foo_messages_all.dart
@@ -11,14 +11,14 @@ import 'package:intl/message_lookup_by_library.dart';
 import 'package:intl/src/intl_helpers.dart';
 import 'package:intl/intl.dart';
 
-import 'foo_messages_fr.dart' as fr;
-import 'foo_messages_de_DE.dart' as de_DE;
+import 'foo_messages_fr.dart' as messages_fr;
+import 'foo_messages_de_DE.dart' as messages_de_DE;
 
 
 MessageLookupByLibrary _findExact(localeName) {
   switch (localeName) {
-    case 'fr' : return fr.messages;
-    case 'de_DE' : return de_DE.messages;
+    case 'fr' : return messages_fr.messages;
+    case 'de_DE' : return messages_de_DE.messages;
     default: return null;
   }
 }