Trace where timers were scheduled in Blink

Source/core/page/EventSource.cpp

Index: Source/core/page/EventSource.cpp
diff --git a/Source/core/page/EventSource.cpp b/Source/core/page/EventSource.cpp
index e46c6dfa76c38d8926c0fa1e1643693f69ea0157..695529aece01bd1ef5b2e2e5074979234a883866 100644
--- a/Source/core/page/EventSource.cpp
+++ b/Source/core/page/EventSource.cpp
@@ -117,7 +117,7 @@ void EventSource::scheduleInitialConnect()
     ASSERT(m_state == CONNECTING);
     ASSERT(!m_requestInFlight);
 
-    m_connectTimer.startOneShot(0);
+    m_connectTimer.startOneShot(0, FROM_HERE);
 }
 
 void EventSource::connect()
@@ -166,7 +166,7 @@ void EventSource::networkRequestEnded()
 void EventSource::scheduleReconnect()
 {
     m_state = CONNECTING;
-    m_connectTimer.startOneShot(m_reconnectDelay / 1000.0);
+    m_connectTimer.startOneShot(m_reconnectDelay / 1000.0, FROM_HERE);
     dispatchEvent(Event::create(EventTypeNames::error));
 }