Trace where timers were scheduled in Blink

Source/core/editing/SpellCheckRequester.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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 222 matching lines @@
         return;
     }
 
     m_frame.spellChecker().markAndReplaceFor(m_processingRequest, results);
 
     if (m_lastProcessedSequence < sequence)
         m_lastProcessedSequence = sequence;
 
     m_processingRequest.clear();
     if (!m_requestQueue.isEmpty())
-        m_timerToProcessQueuedRequest.startOneShot(0);
+        m_timerToProcessQueuedRequest.startOneShot(0, FROM_HERE);
 }
 
 void SpellCheckRequester::didCheckSucceed(int sequence, const Vector<TextCheckingResult>& results)
 {
     TextCheckingRequestData requestData = m_processingRequest->data();
     if (requestData.sequence() == sequence) {
         DocumentMarker::MarkerTypes markers = DocumentMarker::SpellCheckClientMarkers();
         if (!requestData.maskContains(TextCheckingTypeSpelling))
             markers.remove(DocumentMarker::Spelling);
         if (!requestData.maskContains(TextCheckingTypeGrammar))
             markers.remove(DocumentMarker::Grammar);
         m_frame.document()->markers().removeMarkers(m_processingRequest->checkingRange().get(), markers);
     }
     didCheck(sequence, results);
 }
 
 void SpellCheckRequester::didCheckCancel(int sequence)
 {
     Vector<TextCheckingResult> results;
     didCheck(sequence, results);
 }
 
 } // namespace WebCore