Trace where timers were scheduled in Blink

Source/core/frame/FrameView.cpp

Index: Source/core/frame/FrameView.cpp
diff --git a/Source/core/frame/FrameView.cpp b/Source/core/frame/FrameView.cpp
index b2cb7359a68f53b55c55af84554c523b8af8c1e1..7746f348bf0c895e4966c9ba283bd36ddec8831a 100644
--- a/Source/core/frame/FrameView.cpp
+++ b/Source/core/frame/FrameView.cpp
@@ -843,7 +843,7 @@ void FrameView::scheduleOrPerformPostLayoutTasks()
         // defer widget updates and event dispatch until after we return. postLayoutTasks()
         // can make us need to update again, and we can get stuck in a nasty cycle unless
         // we call it through the timer here.
-        m_postLayoutTasksTimer.startOneShot(0);
+        m_postLayoutTasksTimer.startOneShot(0, FROM_HERE);
         if (!partialLayout().isStopping() && needsLayout())
             layout();
     }
@@ -1666,7 +1666,7 @@ void FrameView::scrollPositionChanged()
 
     if (m_didScrollTimer.isActive())
         m_didScrollTimer.stop();
-    m_didScrollTimer.startOneShot(resourcePriorityUpdateDelayAfterScroll);
+    m_didScrollTimer.startOneShot(resourcePriorityUpdateDelayAfterScroll, FROM_HERE);
 
     if (AXObjectCache* cache = m_frame->document()->existingAXObjectCache())
         cache->handleScrollPositionChanged(this);
@@ -2053,7 +2053,7 @@ void FrameView::performPostLayoutTasks()
         return;
 
     if (!m_updateWidgetsTimer.isActive())
-        m_updateWidgetsTimer.startOneShot(0);
+        m_updateWidgetsTimer.startOneShot(0, FROM_HERE);
 
     if (Page* page = m_frame->page()) {
         if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())