Trace where timers were scheduled in Blink

Source/core/fetch/ResourceFetcher.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     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
@@ skipping 678 matching lines @@
             return 0;
     }
 
     if (!request.resourceRequest().url().protocolIsData() && (!m_documentLoader || !m_documentLoader->substituteData().isValid())) {
         if (policy == Use && !m_validatedURLs.contains(request.resourceRequest().url())) {
             // Resources loaded from memory cache should be reported the first time they're used.
             RefPtr<ResourceTimingInfo> info = ResourceTimingInfo::create(request.options().initiatorInfo.name, monotonicallyIncreasingTime());
             populateResourceTiming(info.get(), resource.get(), true);
             m_scheduledResourceTimingReports.add(info, resource->type() == Resource::MainResource);
             if (!m_resourceTimingReportTimer.isActive())
-                m_resourceTimingReportTimer.startOneShot(0);
+                m_resourceTimingReportTimer.startOneShot(0, FROM_HERE);
         }
 
         m_validatedURLs.add(request.resourceRequest().url());
     }
 
     ASSERT(resource->url() == url.string());
     m_documentResources.set(resource->url(), resource);
     return resource;
 }
 
@@ skipping 333 matching lines @@
     }
 
     if (frame())
         frame()->loader().loadDone();
     scheduleDocumentResourcesGC();
 }
 
 void ResourceFetcher::scheduleDocumentResourcesGC()
 {
     if (!m_garbageCollectDocumentResourcesTimer.isActive())
-        m_garbageCollectDocumentResourcesTimer.startOneShot(0);
+        m_garbageCollectDocumentResourcesTimer.startOneShot(0, FROM_HERE);
 }
 
 // Garbage collecting m_documentResources is a workaround for the
 // ResourcePtrs on the RHS being strong references. Ideally this
 // would be a weak map, however ResourcePtrs perform additional
 // bookkeeping on Resources, so instead pseudo-GC them -- when the
 // reference count reaches 1, m_documentResources is the only reference, so
 // remove it from the map.
 void ResourceFetcher::garbageCollectDocumentResourcesTimerFired(Timer<ResourceFetcher>* timer)
 {
@@ skipping 335 matching lines @@
     case Revalidate:
         ++m_revalidateCount;
         return;
     case Use:
         ++m_useCount;
         return;
     }
 }
 
 }