Pop named mixin type variables in correct order.

pkg/front_end/lib/src/fasta/source/outline_builder.dart

Index: pkg/front_end/lib/src/fasta/source/outline_builder.dart
diff --git a/pkg/front_end/lib/src/fasta/source/outline_builder.dart b/pkg/front_end/lib/src/fasta/source/outline_builder.dart
index 46f5d463236404f4c76d082cba8bb7f45ba55937..da33884b3704c78b6793e907c6365c1140f16847 100644
--- a/pkg/front_end/lib/src/fasta/source/outline_builder.dart
+++ b/pkg/front_end/lib/src/fasta/source/outline_builder.dart
@@ -267,9 +267,9 @@ class OutlineBuilder extends UnhandledListener {
     debugEvent("endNamedMixinApplication");
     List<TypeBuilder> interfaces = popIfNotNull(implementsKeyword);
     TypeBuilder mixinApplication = pop();
-    int modifiers = Modifier.validate(pop());
     List<TypeVariableBuilder> typeVariables = pop();
     String name = pop();
+    int modifiers = Modifier.validate(pop());
     List<MetadataBuilder> metadata = pop();
     library.addNamedMixinApplication(
         metadata, name, typeVariables, modifiers, mixinApplication, interfaces);