Trace where timers were scheduled in Blink

Source/core/xml/XMLHttpRequestProgressEventThrottle.cpp

Index: Source/core/xml/XMLHttpRequestProgressEventThrottle.cpp
diff --git a/Source/core/xml/XMLHttpRequestProgressEventThrottle.cpp b/Source/core/xml/XMLHttpRequestProgressEventThrottle.cpp
index 73b01f1e1d6d1f928b6da3801add5e3c782719de..d651dc5485d8a3875b81bf707f1ca42adc56c8e9 100644
--- a/Source/core/xml/XMLHttpRequestProgressEventThrottle.cpp
+++ b/Source/core/xml/XMLHttpRequestProgressEventThrottle.cpp
@@ -65,7 +65,7 @@ void XMLHttpRequestProgressEventThrottle::dispatchProgressEvent(bool lengthCompu
         ASSERT(!m_total);
 
         dispatchEvent(XMLHttpRequestProgressEvent::create(EventTypeNames::progress, lengthComputable, loaded, total));
-        startRepeating(minimumProgressEventDispatchingIntervalInSeconds);
+        startRepeating(minimumProgressEventDispatchingIntervalInSeconds, FROM_HERE);
         return;
     }
 
@@ -213,7 +213,7 @@ void XMLHttpRequestProgressEventThrottle::resume()
     // the list of active DOM objects to resume them, and any activated JS event-handler
     // could insert new active DOM objects to the list.
     // m_deferEvents is kept true until all deferred events have been dispatched.
-    m_dispatchDeferredEventsTimer.startOneShot(0);
+    m_dispatchDeferredEventsTimer.startOneShot(0, FROM_HERE);
 }
 
 } // namespace WebCore