Trace where timers were scheduled in Blink

Source/core/loader/ImageLoader.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 320 matching lines @@
     if (wasProtected == m_elementIsProtected)
         return;
 
     if (m_elementIsProtected) {
         if (m_derefElementTimer.isActive())
             m_derefElementTimer.stop();
         else
             m_element->ref();
     } else {
         ASSERT(!m_derefElementTimer.isActive());
-        m_derefElementTimer.startOneShot(0);
+        m_derefElementTimer.startOneShot(0, FROM_HERE);
     }
 }
 
 void ImageLoader::timerFired(Timer<ImageLoader>*)
 {
     m_element->deref();
 }
 
 void ImageLoader::dispatchPendingEvent(ImageEventSender* eventSender)
 {
@@ skipping 112 matching lines @@
         handle->notifyImageSourceChanged();
     }
 }
 
 inline void ImageLoader::clearFailedLoadURL()
 {
     m_failedLoadURL = AtomicString();
 }
 
 }