DevTools: Capture async stacks for event listeners.

Source/core/events/EventTarget.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  *           (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ skipping 65 matching lines @@
 
 inline DOMWindow* EventTarget::executingWindow()
 {
     if (ExecutionContext* context = executionContext())
         return context->executingWindow();
     return 0;
 }
 
 bool EventTarget::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
 {
-    return ensureEventTargetData().eventListenerMap.add(eventType, listener, useCapture);
+    EventListener* eventListener = listener.get();
+    if (ensureEventTargetData().eventListenerMap.add(eventType, listener, useCapture)) {
+        InspectorInstrumentation::didAddEventListener(this, eventType, eventListener, useCapture);
+        return true;
+    }
+    return false;
 }
 
 bool EventTarget::removeEventListener(const AtomicString& eventType, EventListener* listener, bool useCapture)
 {
     EventTargetData* d = eventTargetData();
     if (!d)
         return false;
 
     size_t indexOfRemovedListener;
 
     if (!d->eventListenerMap.remove(eventType, listener, useCapture, indexOfRemovedListener))
         return false;
+    InspectorInstrumentation::didRemoveEventListener(this, eventType, listener, useCapture);
 
     // Notify firing events planning to invoke the listener at 'index' that
     // they have one less listener to invoke.
     if (!d->firingEventIterators)
         return true;
     for (size_t i = 0; i < d->firingEventIterators->size(); ++i) {
         FiringEventIterator& firingIterator = d->firingEventIterators->at(i);
         if (eventType != firingIterator.eventType)
             continue;
 
@@ skipping 211 matching lines @@
 
         // If stopImmediatePropagation has been called, we just break out immediately, without
         // handling any more events on this target.
         if (event->immediatePropagationStopped())
             break;
 
         ExecutionContext* context = executionContext();
         if (!context)
             break;
 
-        InspectorInstrumentationCookie cookie = InspectorInstrumentation::willHandleEvent(context, event);
+        InspectorInstrumentationCookie cookie = InspectorInstrumentation::willHandleEvent(this, event->type(), registeredListener.listener.get(), registeredListener.useCapture);
         // To match Mozilla, the AT_TARGET phase fires both capturing and bubbling
         // event listeners, even though that violates some versions of the DOM spec.
         registeredListener.listener->handleEvent(context, event);
         if (!userEventWasHandled && UserGestureIndicator::processingUserGesture())
             userEventWasHandled = true;
         InspectorInstrumentation::didHandleEvent(cookie);
     }
     d->firingEventIterators->removeLast();
     if (userEventWasHandled) {
         if (ExecutionContext* context = executionContext())
@@ skipping 15 matching lines @@
 
     return *listenerVector;
 }
 
 void EventTarget::removeAllEventListeners()
 {
     EventTargetData* d = eventTargetData();
     if (!d)
         return;
     d->eventListenerMap.clear();
+    InspectorInstrumentation::didRemoveAllEventListeners(this);
 
     // Notify firing events planning to invoke the listener at 'index' that
     // they have one less listener to invoke.
     if (d->firingEventIterators) {
         for (size_t i = 0; i < d->firingEventIterators->size(); ++i) {
             d->firingEventIterators->at(i).iterator = 0;
             d->firingEventIterators->at(i).end = 0;
         }
     }
 }
 
 } // namespace WebCore