Added counters for pointer boundary events fired.

third_party/WebKit/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 570 matching lines @@
     } else if (checkTypeThenUseCount(event, EventTypeNames::focusin, UseCounter::FocusInOutEvent)) {
     } else if (checkTypeThenUseCount(event, EventTypeNames::focusout, UseCounter::FocusInOutEvent)) {
     } else if (checkTypeThenUseCount(event, EventTypeNames::textInput, UseCounter::TextInputFired)) {
     } else if (checkTypeThenUseCount(event, EventTypeNames::touchstart, UseCounter::TouchStartFired)) {
     } else if (checkTypeThenUseCount(event, EventTypeNames::mousedown, UseCounter::MouseDownFired)) {
     } else if (checkTypeThenUseCount(event, EventTypeNames::pointerdown, UseCounter::PointerDownFired)) {
         if (LocalDOMWindow* executingWindow = this->executingWindow()) {
             if (event->isPointerEvent() && static_cast<PointerEvent*>(event)->pointerType() == "touch")
                 UseCounter::count(executingWindow->document(), UseCounter::PointerDownFiredForTouch);
         }
+    } else if (checkTypeThenUseCount(event, EventTypeNames::pointerenter, UseCounter::PointerEnterLeaveFired)
+        || checkTypeThenUseCount(event, EventTypeNames::pointerleave, UseCounter::PointerEnterLeaveFired)) {
+        LocalDOMWindow* executingWindow = this->executingWindow();
+        Node* node = toNode();
+        if (executingWindow && node && node->getNodeType() == Node::kElementNode && event->isPointerEvent()) {
+            const Element* element = static_cast<Element*>(node);
+            const PointerEvent* pointerEvent = static_cast<PointerEvent*>(event);
+            if (element->hasPointerCapture(pointerEvent->pointerId()))
+                UseCounter::count(executingWindow->document(), UseCounter::PointerEnterLeaveFiredWhileCaptured);
+        }
+    } else if (checkTypeThenUseCount(event, EventTypeNames::pointerover, UseCounter::PointerOverOutFired)

[dtapuska, 2016/08/24 20:20:57]

This is duplicated code; can we parameterize this somehow to avoid the
duplication?

[mustaq, 2016/08/24 20:50:28]

Done.

+        || checkTypeThenUseCount(event, EventTypeNames::pointerout, UseCounter::PointerOverOutFired)) {
+        LocalDOMWindow* executingWindow = this->executingWindow();
+        Node* node = toNode();
+        if (executingWindow && node && node->getNodeType() == Node::kElementNode && event->isPointerEvent()) {
+            const Element* element = static_cast<Element*>(node);
+            const PointerEvent* pointerEvent = static_cast<PointerEvent*>(event);
+            if (element->hasPointerCapture(pointerEvent->pointerId()))
+                UseCounter::count(executingWindow->document(), UseCounter::PointerOverOutFiredWhileCaptured);
+        }
     }
 
     ExecutionContext* context = getExecutionContext();
     if (!context)
         return false;
 
     size_t i = 0;
     size_t size = entry.size();
     if (!d->firingEventIterators)
         d->firingEventIterators = wrapUnique(new FiringEventIteratorVector);
@@ skipping 96 matching lines @@
     // 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 blink