Trace where timers were scheduled in Blink

Source/core/dom/CSSSelectorWatch.cpp

Index: Source/core/dom/CSSSelectorWatch.cpp
diff --git a/Source/core/dom/CSSSelectorWatch.cpp b/Source/core/dom/CSSSelectorWatch.cpp
index 8935d5944ef3cba51c665d3f5c850071968c45da..a9f941dfa6f169b7b88ef11efe527a2aebe23a7a 100644
--- a/Source/core/dom/CSSSelectorWatch.cpp
+++ b/Source/core/dom/CSSSelectorWatch.cpp
@@ -69,7 +69,7 @@ void CSSSelectorWatch::callbackSelectorChangeTimerFired(Timer<CSSSelectorWatch>*
 
     if (m_timerExpirations < 1) {
         m_timerExpirations++;
-        m_callbackSelectorChangeTimer.startOneShot(0);
+        m_callbackSelectorChangeTimer.startOneShot(0, FROM_HERE);
         return;
     }
     if (m_document.frame()) {
@@ -125,7 +125,7 @@ void CSSSelectorWatch::updateSelectorMatches(const Vector<String>& removedSelect
     } else {
         m_timerExpirations = 0;
         if (!m_callbackSelectorChangeTimer.isActive())
-            m_callbackSelectorChangeTimer.startOneShot(0);
+            m_callbackSelectorChangeTimer.startOneShot(0, FROM_HERE);
     }
 }