Trace where timers were scheduled in Blink

Source/core/fetch/ResourceFetcher.cpp

Index: Source/core/fetch/ResourceFetcher.cpp
diff --git a/Source/core/fetch/ResourceFetcher.cpp b/Source/core/fetch/ResourceFetcher.cpp
index 7c25ea95bd11cb7278023f60278602230ffb1ad6..29a16eb0f662bc2097c39508e73ca0e4bc3f3093 100644
--- a/Source/core/fetch/ResourceFetcher.cpp
+++ b/Source/core/fetch/ResourceFetcher.cpp
@@ -696,7 +696,7 @@ ResourcePtr<Resource> ResourceFetcher::requestResource(Resource::Type type, Fetc
             populateResourceTiming(info.get(), resource.get(), true);
             m_scheduledResourceTimingReports.add(info, resource->type() == Resource::MainResource);
             if (!m_resourceTimingReportTimer.isActive())
-                m_resourceTimingReportTimer.startOneShot(0);
+                m_resourceTimingReportTimer.startOneShot(0, FROM_HERE);
         }
 
         m_validatedURLs.add(request.resourceRequest().url());
@@ -1050,7 +1050,7 @@ void ResourceFetcher::didLoadResource(Resource* resource)
 void ResourceFetcher::scheduleDocumentResourcesGC()
 {
     if (!m_garbageCollectDocumentResourcesTimer.isActive())
-        m_garbageCollectDocumentResourcesTimer.startOneShot(0);
+        m_garbageCollectDocumentResourcesTimer.startOneShot(0, FROM_HERE);
 }
 
 // Garbage collecting m_documentResources is a workaround for the