dart2js: add type arguments to constructor in case the class needs rti.

pkg/compiler/lib/src/js_emitter/old_emitter/setup_program_builder.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.
 
 part of dart2js.js_emitter;
 
 // TODO(ahe): Share these with js_helper.dart.
 const FUNCTION_INDEX = 0;
 const NAME_INDEX = 1;
 const CALL_NAME_INDEX = 2;
@@ skipping 217 matching lines @@
 
       for (var i = 0; i < fields.length; i++) {
         if(i != 0) str += ", ";
 
         var field = generateAccessor(fields[i], accessors, name);
         if (#hasIsolateSupport) { fieldNames += "'" + field + "',"; }
         var parameter = "p_" + field;
         str += parameter;
         body += ("this." + field + " = " + parameter + ";\\n");
       }
+      // TODO(zarah): Check whether there is any gain in always having this
+      // property and if so, add it unconditionally.
+      body += "if (typeInfo) this.\$builtinTypeInfo = typeInfo;\\n";
       if (supportsDirectProtoAccess) {
         body += "this." + #deferredActionString + "();";
       }
-      str += ") {\\n" + body + "}\\n";
+
+      if (fields.length > 0) str += ",";
+      str += "typeInfo) {\\n" + body + "}\\n";
       str += name + ".$typeNameProperty=\\"" + name + "\\";\\n";
       str += "\$desc=\$collectedClasses." + name + "[1];\\n";
       str += name + ".prototype = \$desc;\\n";
       if (typeof defineClass.name != "string") {
         str += name + ".name=\\"" + name + "\\";\\n";
       }
       if (#hasIsolateSupport) {
         str += name + "." + #fieldNamesProperty + "=[" + fieldNames
                + "];\\n";
       }
@@ skipping 593 matching lines @@
 (function() {
   var result = $array[$index];
   if ($check) {
     throw new Error(
         name + ": expected value of type \'$type\' at index " + ($index) +
         " but got " + (typeof result));
   }
   return result;
 })()''';
 }