Trace where timers were scheduled in Blink

Source/bindings/v8/V8GCForContextDispose.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 28 matching lines @@
     : m_pseudoIdleTimer(this, &V8GCForContextDispose::pseudoIdleTimerFired)
     , m_didDisposeContextForMainFrame(false)
 {
 }
 
 void V8GCForContextDispose::notifyContextDisposed(bool isMainFrame)
 {
     m_didDisposeContextForMainFrame = m_didDisposeContextForMainFrame || isMainFrame;
     v8::V8::ContextDisposedNotification();
     if (!m_pseudoIdleTimer.isActive())
-        m_pseudoIdleTimer.startOneShot(0.8);
+        m_pseudoIdleTimer.startOneShot(0.8, FROM_HERE);
 }
 
 void V8GCForContextDispose::notifyIdleSooner(double maximumFireInterval)
 {
     if (m_pseudoIdleTimer.isActive()) {
         double nextFireInterval = m_pseudoIdleTimer.nextFireInterval();
         if (nextFireInterval > maximumFireInterval) {
             m_pseudoIdleTimer.stop();
-            m_pseudoIdleTimer.startOneShot(maximumFireInterval);
+            m_pseudoIdleTimer.startOneShot(maximumFireInterval, FROM_HERE);
         }
     }
 }
 
 V8GCForContextDispose& V8GCForContextDispose::instanceTemplate()
 {
     DEFINE_STATIC_LOCAL(V8GCForContextDispose, staticInstance, ());
     return staticInstance;
 }
 
 void V8GCForContextDispose::pseudoIdleTimerFired(Timer<V8GCForContextDispose>*)
 {
     const int longIdlePauseInMs = 1000;
     const int shortIdlePauseInMs = 10;
     int hint = m_didDisposeContextForMainFrame ? longIdlePauseInMs : shortIdlePauseInMs;
     v8::V8::IdleNotification(hint);
     m_didDisposeContextForMainFrame = false;
 }
 
 } // namespace WebCore