idl_parser: Fix test expectations.

tools/idl_parser/test_parser/interface_web.idl

 /* Copyright (c) 2013 The Chromium Authors. All rights reserved.
    Use of this source code is governed by a BSD-style license that can be
   found in the LICENSE file. */
 
 /* Test Interface productions
 
 Run with --test to generate an AST and verify that all comments accurately
 reflect the state of the Nodes.
 
 BUILD Type(Name)
@@ skipping 53 matching lines @@
   void foo(DOMString arg, );
 };
 
 /* TREE
  *Error(Unexpected keyword "double" after keyword "readonly".)
  */
 interface MyIFaceMissingAttribute {
   readonly double foo;
 };
 
-/* TREE
- *Interface(MyIFaceContainsUnresolvedConflictDiff)
- *  Operation(foo)
- *    Arguments()
- *    Type()
- *      PrimitiveType(DOMString)
- *  Error(Unexpected "<" after ";".)
- */
+/* ERROR Unexpected "<" after ";". */
 interface MyIFaceContainsUnresolvedConflictDiff {
     DOMString foo();
 <<<<<< ours
     DOMString bar();
     iterable<long>;
 ======
 >>>>>> theirs
 };
 
 /* TREE
@@ skipping 296 matching lines @@
  *    Type()
  *      UnionType()
  *        Type()
  *          PrimitiveType(DOMString)
  *        Type()
  *          PrimitiveType(long)
  */
 interface MyIfaceUnion {
   attribute (DOMString or long) foo;
 };