Trace where timers were scheduled in Blink

Source/core/frame/DOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 815 matching lines @@
         return;
     String sourceOrigin = sourceDocument->securityOrigin()->toString();
 
     // Capture stack trace only when inspector front-end is loaded as it may be time consuming.
     RefPtr<ScriptCallStack> stackTrace;
     if (InspectorInstrumentation::consoleAgentEnabled(sourceDocument))
         stackTrace = createScriptCallStack(ScriptCallStack::maxCallStackSizeToCapture, true);
 
     // Schedule the message.
     PostMessageTimer* timer = new PostMessageTimer(*this, message, sourceOrigin, source, channels.release(), target.get(), stackTrace.release());
-    timer->startOneShot(0);
+    timer->startOneShot(0, FROM_HERE);
     timer->suspendIfNeeded();
 }
 
 void DOMWindow::postMessageTimerFired(PassOwnPtr<PostMessageTimer> t)
 {
     OwnPtr<PostMessageTimer> timer(t);
 
     if (!isCurrentlyDisplayedInFrame())
         return;
 
@@ skipping 967 matching lines @@
     return static_cast<DOMWindowLifecycleNotifier&>(LifecycleContext<DOMWindow>::lifecycleNotifier());
 }
 
 PassOwnPtr<LifecycleNotifier<DOMWindow> > DOMWindow::createLifecycleNotifier()
 {
     return DOMWindowLifecycleNotifier::create(this);
 }
 
 
 } // namespace WebCore