[polymer] switch comment style

pkg/polymer/lib/src/job.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 polymer;
 
-/**
- * Invoke [callback] in [wait], unless the job is re-registered,
- * which resets the timer. For example:
- *
- *     _myJob = runJob(_myJob, callback, const Duration(milliseconds: 100));
- *
- * Returns a job handle which can be used to re-register a job.
- */
+/// Invoke [callback] in [wait], unless the job is re-registered,
+/// which resets the timer. For example:
+///
+///     _myJob = runJob(_myJob, callback, const Duration(milliseconds: 100));
+///
+/// Returns a job handle which can be used to re-register a job.
 // Dart note: renamed to runJob to avoid conflict with instance member "job".
 _Job _runJob(_Job job, void callback(), Duration wait) {
   if (job != null) {
     job.stop();
   } else {
     job = new _Job();
   }
   job.go(callback, wait);
   return job;
 }
@@ skipping 16 matching lines @@
     }
   }
 
   void complete() {
     if (_timer != null) {
       stop();
       _callback();
     }
   }
 }