Switch dart2js 'typedef name = mixinApplication' to 'class name = mixinApplication'.

tests/compiler/dart2js/mirrors_used_test.dart

Index: tests/compiler/dart2js/mirrors_used_test.dart
diff --git a/tests/compiler/dart2js/mirrors_used_test.dart b/tests/compiler/dart2js/mirrors_used_test.dart
index 1f259369a5d544be299916c26a1cbf440ed7b7e2..4dd9a112836b84882c4f14aa2eded369c89076a2 100644
--- a/tests/compiler/dart2js/mirrors_used_test.dart
+++ b/tests/compiler/dart2js/mirrors_used_test.dart
@@ -35,6 +35,11 @@ void expectOnlyVerboseInfo(Uri uri, int begin, int end, String message, kind) {
     return;
   }
   if (kind.name == 'info') return;
+
+  // TODO(aprelev@gmail.com): Remove once dartbug.com/13907 is fixed.
+  if (message.contains("'typedef' keyword in mixin "
+     "applications was deprecated")) return;
+
   throw '$uri:$begin:$end: $kind: $message';
 }