Trace where timers were scheduled in Blink

Source/core/inspector/InspectorDOMAgent.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 185 matching lines @@
 RevalidateStyleAttributeTask::RevalidateStyleAttributeTask(InspectorDOMAgent* domAgent)
     : m_domAgent(domAgent)
     , m_timer(this, &RevalidateStyleAttributeTask::onTimer)
 {
 }
 
 void RevalidateStyleAttributeTask::scheduleFor(Element* element)
 {
     m_elements.add(element);
     if (!m_timer.isActive())
-        m_timer.startOneShot(0);
+        m_timer.startOneShot(0, FROM_HERE);
 }
 
 void RevalidateStyleAttributeTask::onTimer(Timer<RevalidateStyleAttributeTask>*)
 {
     // The timer is stopped on m_domAgent destruction, so this method will never be called after m_domAgent has been destroyed.
     Vector<Element*> elements;
     for (HashSet<RefPtr<Element> >::iterator it = m_elements.begin(), end = m_elements.end(); it != end; ++it)
         elements.append(it->get());
     m_domAgent->styleAttributeInvalidated(elements);
 
@@ skipping 1834 matching lines @@
     if (!m_documentNodeToIdMap.contains(m_document)) {
         RefPtr<TypeBuilder::DOM::Node> root;
         getDocument(errorString, root);
         return errorString->isEmpty();
     }
     return true;
 }
 
 } // namespace WebCore