Trace where timers were scheduled in Blink

Source/core/svg/graphics/SVGImage.cpp

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 55 matching lines @@
 // the end of current event loop.
 class DelayedSVGImageDestructor {
 public:
     void add(PassOwnPtr<SVGImageChromeClient> chromeClient, PassOwnPtr<Page> page)
     {
         Entry entry;
         entry.chromeClient = chromeClient.leakPtr();
         entry.page = page.leakPtr();
 
         m_entries.append(entry);
-        m_detachTimer.startOneShot(0.0);
+        m_detachTimer.startOneShot(0.0, FROM_HERE);
     }
 
     static DelayedSVGImageDestructor* get()
     {
         DEFINE_STATIC_LOCAL(DelayedSVGImageDestructor, delayed, ());
         return &delayed;
     }
 
 private:
     DelayedSVGImageDestructor()
@@ skipping 387 matching lines @@
 
     return m_page;
 }
 
 String SVGImage::filenameExtension() const
 {
     return "svg";
 }
 
 }