Trace where timers were scheduled in Blink

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 2302 matching lines @@
     }
     else
         hitType |= HitTestRequest::Active | HitTestRequest::ReadOnly;
 
     if ((!scrollbar && !eventTarget) || !(hitType & HitTestRequest::ReadOnly)) {
         IntPoint hitTestPoint = m_frame->view()->windowToContents(adjustedPoint);
         HitTestResult result = hitTestResultAtPoint(hitTestPoint, hitType | HitTestRequest::AllowFrameScrollbars);
 
         if (shouldKeepActiveForMinInterval) {
             m_lastDeferredTapElement = result.innerElement();
-            m_activeIntervalTimer.startOneShot(minimumActiveInterval - activeInterval);
+            m_activeIntervalTimer.startOneShot(minimumActiveInterval - activeInterval, FROM_HERE);
         }
 
         eventTarget = result.targetNode();
         if (!scrollbar) {
             FrameView* view = m_frame->view();
             scrollbar = view ? view->scrollbarAtPoint(gestureEvent.position()) : 0;
         }
         if (!scrollbar)
             scrollbar = result.scrollbar();
     }
@@ skipping 551 matching lines @@
     // context menu event.
     handleMousePressEvent(mouseEvent);
     return sendContextMenuEvent(mouseEvent);
     // We do not need to send a corresponding mouse release because in case of
     // right-click, the context menu takes capture and consumes all events.
 }
 
 void EventHandler::scheduleHoverStateUpdate()
 {
     if (!m_hoverTimer.isActive())
-        m_hoverTimer.startOneShot(0);
+        m_hoverTimer.startOneShot(0, FROM_HERE);
 }
 
 void EventHandler::scheduleCursorUpdate()
 {
     if (!m_cursorUpdateTimer.isActive())
-        m_cursorUpdateTimer.startOneShot(cursorUpdateInterval);
+        m_cursorUpdateTimer.startOneShot(cursorUpdateInterval, FROM_HERE);
 }
 
 void EventHandler::dispatchFakeMouseMoveEventSoon()
 {
     if (m_mousePressed)
         return;
 
     if (m_mousePositionIsUnknown)
         return;
 
     Settings* settings = m_frame->settings();
     if (settings && !settings->deviceSupportsMouse())
         return;
 
     // If the content has ever taken longer than fakeMouseMoveShortInterval we
     // reschedule the timer and use a longer time. This will cause the content
     // to receive these moves only after the user is done scrolling, reducing
     // pauses during the scroll.
     if (m_maxMouseMovedDuration > fakeMouseMoveShortInterval) {
         if (m_fakeMouseMoveEventTimer.isActive())
             m_fakeMouseMoveEventTimer.stop();
-        m_fakeMouseMoveEventTimer.startOneShot(fakeMouseMoveLongInterval);
+        m_fakeMouseMoveEventTimer.startOneShot(fakeMouseMoveLongInterval, FROM_HERE);
     } else {
         if (!m_fakeMouseMoveEventTimer.isActive())
-            m_fakeMouseMoveEventTimer.startOneShot(fakeMouseMoveShortInterval);
+            m_fakeMouseMoveEventTimer.startOneShot(fakeMouseMoveShortInterval, FROM_HERE);
     }
 }
 
 void EventHandler::dispatchFakeMouseMoveEventSoonInQuad(const FloatQuad& quad)
 {
     FrameView* view = m_frame->view();
     if (!view)
         return;
 
     if (!quad.containsPoint(view->windowToContents(m_lastKnownMousePosition)))
@@ skipping 1088 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace WebCore