Remove cancel and make crash exit with code 253.

sdk/lib/_internal/compiler/implementation/dump_info.dart

 // Copyright (c) 2013, 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 dump_info;
 
 import 'elements/elements.dart';
 import 'elements/visitor.dart';
 import 'dart:convert' show HtmlEscape;
 import 'dart2jslib.dart' show
@@ skipping 217 matching lines @@
   final Compiler compiler;
 
   /// Contains the elements visited on the path from the library to here.
   List<Element> stack = new List<Element>();
 
   Element get currentElement => stack.last;
 
   InfoDumpVisitor(Compiler this.compiler);
 
   InfoNode visitElement(Element element) {
-    compiler.internalError("This element of kind ${element.kind} "
-        "does not support --dump-info",
-        token: element.position());
+    compiler.internalError(element,
+        "This element of kind ${element.kind} "
+        "does not support --dump-info");
     return null;
   }
 
   InfoNode visitLibraryElement(LibraryElement element) {
     List<InfoNode> contents = new List<InfoNode>();
     int size = compiler.dumpInfoTask.codeSizeCounter
         .getGeneratedSizeOf(element);
     if (size == 0) return null;
     stack.add(element);
     // For some reason the patch library contains the origin libraries members,
@@ skipping 338 matching lines @@
       }
       document.querySelector('.sort_by_size').addEventListener('click',
           function() {
             sortBySize();
           }, false);
     </script>
   </body>
 </html>""");
   }
 }