| Index: sdk/lib/_internal/compiler/implementation/dart_backend/renamer.dart | 
| diff --git a/sdk/lib/_internal/compiler/implementation/dart_backend/renamer.dart b/sdk/lib/_internal/compiler/implementation/dart_backend/renamer.dart | 
| index 9acc6ec13e225332e66d881b4c679e3a2c38955a..83531c7873f5ed9f933db626785588d463eff555 100644 | 
| --- a/sdk/lib/_internal/compiler/implementation/dart_backend/renamer.dart | 
| +++ b/sdk/lib/_internal/compiler/implementation/dart_backend/renamer.dart | 
| @@ -71,7 +71,7 @@ void renamePlaceholders( | 
| final Map<LibraryElement, Map<String, String>> renamed | 
| = new Map<LibraryElement, Map<String, String>>(); | 
|  | 
| -  renameNodes(Collection<Node> nodes, renamer) { | 
| +  renameNodes(Iterable<Node> nodes, renamer) { | 
| for (Node node in sorted(nodes, _compareNodes)) { | 
| renames[node] = renamer(node); | 
| } | 
|  |