Trace where timers were scheduled in Blink

Source/core/inspector/InspectorHeapProfilerAgent.cpp

 /*
  * Copyright (C) 2013 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 102 matching lines @@
 void InspectorHeapProfilerAgent::HeapStatsUpdateTask::onTimer(Timer<HeapStatsUpdateTask>*)
 {
     // The timer is stopped on m_heapProfilerAgent destruction,
     // so this method will never be called after m_heapProfilerAgent has been destroyed.
     m_heapProfilerAgent->requestHeapStatsUpdate();
 }
 
 void InspectorHeapProfilerAgent::HeapStatsUpdateTask::startTimer()
 {
     ASSERT(!m_timer.isActive());
-    m_timer.startRepeating(0.05);
+    m_timer.startRepeating(0.05, FROM_HERE);
 }
 
 class InspectorHeapProfilerAgent::HeapStatsStream FINAL : public ScriptProfiler::OutputStream {
 public:
     HeapStatsStream(InspectorHeapProfilerAgent* heapProfilerAgent)
         : m_heapProfilerAgent(heapProfilerAgent)
     {
     }
 
     virtual void write(const uint32_t* chunk, const int size) OVERRIDE
@@ skipping 152 matching lines @@
     if (value.hasNoValue() || value.isUndefined()) {
         *errorString = "Object with given id not found";
         return;
     }
     unsigned id = ScriptProfiler::getHeapObjectId(value);
     *heapSnapshotObjectId = String::number(id);
 }
 
 } // namespace WebCore