Trace where timers were scheduled in Blink

Source/core/html/imports/HTMLImportsController.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 136 matching lines @@
 
 bool HTMLImportsController::isDone() const
 {
     return !m_master->parsing();
 }
 
 void HTMLImportsController::scheduleRecalcState()
 {
     if (m_recalcTimer.isActive())
         return;
-    m_recalcTimer.startOneShot(0);
+    m_recalcTimer.startOneShot(0, FROM_HERE);
 }
 
 void HTMLImportsController::recalcTimerFired(Timer<HTMLImportsController>*)
 {
     do {
         m_recalcTimer.stop();
         HTMLImport::recalcTreeState(this);
     } while (m_recalcTimer.isActive());
 }
 
 } // namespace WebCore