Remove support for mixin typedefs in dart2js.

pkg/compiler/lib/src/parser/node_listener.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.parser.node_listener;
 
 import '../common.dart';
 import '../elements/elements.dart' show CompilationUnitElement;
 import '../native/native.dart' as native;
 import '../tokens/precedence_constants.dart' as Precedence show INDEX_INFO;
@@ skipping 110 matching lines @@
     Identifier name = popNode();
     TypeAnnotation returnType = popNode();
     pushNode(new Typedef(
         returnType, name, typeParameters, formals, typedefKeyword, endToken));
   }
 
   void endNamedMixinApplication(
       Token classKeyword, Token implementsKeyword, Token endToken) {
     NodeList interfaces = (implementsKeyword != null) ? popNode() : null;
     Node mixinApplication = popNode();
-    Modifiers modifiers = popNode();
     NodeList typeParameters = popNode();
     Identifier name = popNode();
+    Modifiers modifiers = popNode();
     pushNode(new NamedMixinApplication(name, typeParameters, modifiers,
         mixinApplication, interfaces, classKeyword, endToken));
   }
 
   void endEnum(Token enumKeyword, Token endBrace, int count) {
     NodeList names = makeNodeList(count, enumKeyword.next.next, endBrace, ",");
     Identifier name = popNode();
     pushNode(new Enum(enumKeyword, name, names));
   }
 
@@ skipping 720 matching lines @@
   void log(message) {
     reporter.log(message);
   }
 
   void internalError({Token token, Node node}) {
     // TODO(ahe): This should call reporter.internalError.
     Spannable spannable = (token == null) ? node : token;
     throw new SpannableAssertionFailure(spannable, 'Internal error in parser.');
   }
 }