Trace where timers were scheduled in Blink

Source/core/fetch/MemoryCache.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 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 63 matching lines @@
     , m_maxDeferredPruneDeadCapacity(cDeferredPruneDeadCapacityFactor * cDefaultCacheCapacity)
     , m_delayBeforeLiveDecodedPrune(cMinDelayBeforeLiveDecodedPrune)
     , m_liveSize(0)
     , m_deadSize(0)
 #ifdef MEMORY_CACHE_STATS
     , m_statsTimer(this, &MemoryCache::dumpStats)
 #endif
 {
 #ifdef MEMORY_CACHE_STATS
     const double statsIntervalInSeconds = 15;
-    m_statsTimer.startRepeating(statsIntervalInSeconds);
+    m_statsTimer.startRepeating(statsIntervalInSeconds, FROM_HERE);
 #endif
     m_pruneTimeStamp = m_pruneFrameTimeStamp = FrameView::currentFrameTimeStamp();
 }
 
 MemoryCache::~MemoryCache()
 {
     if (m_prunePending)
         blink::Platform::current()->currentThread()->removeTaskObserver(this);
 }
 
@@ skipping 587 matching lines @@
                 printf("(%.1fK, %.1fK, %uA, %dR, %d, %d); ", current->decodedSize() / 1024.0f, (current->encodedSize() + current->overheadSize()) / 1024.0f, current->accessCount(), current->hasClients(), current->isPurgeable(), current->wasPurged());
 
             current = prev;
         }
     }
 }
 
 #endif // MEMORY_CACHE_STATS
 
 } // namespace WebCore