Trace where timers were scheduled in Blink

Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 825 matching lines @@
         // Calls resumeScheduledEvents()
         performPostLayoutTasks();
         m_inSynchronousPostLayout = false;
     }
 
     if (!m_postLayoutTasksTimer.isActive() && (needsLayout() || m_inSynchronousPostLayout)) {
         // If we need layout or are already in a synchronous call to postLayoutTasks(),
         // 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();
     }
 }
 
 void FrameView::layout(bool allowSubtree)
 {
     // We should never layout a Document which is not in a LocalFrame.
     ASSERT(m_frame);
     ASSERT(m_frame->view() == this);
@@ skipping 802 matching lines @@
     if (RenderView* renderView = document->renderView()) {
         if (renderView->usesCompositing()) {
             // https://code.google.com/p/chromium/issues/detail?id=343767
             DisableCompositingQueryAsserts disabler;
             renderView->compositor()->frameViewDidScroll();
         }
     }
 
     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);
 
     frame().loader().saveScrollState();
 }
 
 void FrameView::didScrollTimerFired(Timer<FrameView>*)
 {
     if (m_frame->document() && m_frame->document()->renderer()) {
@@ skipping 366 matching lines @@
 
     FontFaceSet::didLayout(*m_frame->document());
 
     updateWidgetPositions();
 
     // Plugins could have torn down the page inside updateWidgetPositions().
     if (!renderView())
         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())
             scrollingCoordinator->notifyLayoutUpdated();
     }
 
     scrollToAnchor();
 
     sendResizeEventIfNeeded();
 }
@@ skipping 1126 matching lines @@
 void FrameView::willRemoveScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
 {
     ScrollableArea::willRemoveScrollbar(scrollbar, orientation);
     if (AXObjectCache* cache = axObjectCache()) {
         cache->remove(scrollbar);
         cache->handleScrollbarUpdate(this);
     }
 }
 
 } // namespace WebCore