Trace where timers were scheduled in Blink

Source/core/css/resolver/MatchedPropertiesCache.cpp

Index: Source/core/css/resolver/MatchedPropertiesCache.cpp
diff --git a/Source/core/css/resolver/MatchedPropertiesCache.cpp b/Source/core/css/resolver/MatchedPropertiesCache.cpp
index 2bd1f9165f0c1f111384df3bda6a6b4a45888cb4..56a7f5bdd47d03e2da6da44cdd4461d78c4bca4f 100644
--- a/Source/core/css/resolver/MatchedPropertiesCache.cpp
+++ b/Source/core/css/resolver/MatchedPropertiesCache.cpp
@@ -89,7 +89,7 @@ void MatchedPropertiesCache::add(const RenderStyle* style, const RenderStyle* pa
     if (++m_additionsSinceLastSweep >= maxAdditionsBetweenSweeps
         && !m_sweepTimer.isActive()) {
         static const unsigned sweepTimeInSeconds = 60;
-        m_sweepTimer.startOneShot(sweepTimeInSeconds);
+        m_sweepTimer.startOneShot(sweepTimeInSeconds, FROM_HERE);
     }
 
     ASSERT(hash);