Added UseCounters for touchstart, mousedown, pointerdown invocation

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 21 matching lines @@
 #include "core/events/EventTarget.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptEventListener.h"
 #include "bindings/core/v8/SourceLocation.h"
 #include "bindings/core/v8/V8DOMActivityLogger.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/editing/Editor.h"
 #include "core/events/Event.h"
 #include "core/events/EventUtil.h"
+#include "core/events/PointerEvent.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/Settings.h"
 #include "core/frame/UseCounter.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "platform/EventDispatchForbiddenScope.h"
 #include "wtf/PtrUtil.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/Threading.h"
@@ skipping 479 matching lines @@
     return dispatchEventResult(*event);
 }
 
 bool EventTarget::fireEventListeners(Event* event, EventTargetData* d, EventListenerVector& entry)
 {
     // Fire all listeners registered for this event. Don't fire listeners removed
     // during event dispatch. Also, don't fire event listeners added during event
     // dispatch. Conveniently, all new event listeners will be added after or at
     // index |size|, so iterating up to (but not including) |size| naturally excludes
     // new event listeners.
+    //
+    // TODO(mustaq): This code needs to be refactored, crbug.com/629601
 
     if (event->type() == EventTypeNames::beforeunload) {
         if (LocalDOMWindow* executingWindow = this->executingWindow()) {
             if (executingWindow->top())
                 UseCounter::count(executingWindow->document(), UseCounter::SubFrameBeforeUnloadFired);
             UseCounter::count(executingWindow->document(), UseCounter::DocumentBeforeUnloadFired);
         }
     } else if (event->type() == EventTypeNames::unload) {
         if (LocalDOMWindow* executingWindow = this->executingWindow())
             UseCounter::count(executingWindow->document(), UseCounter::DocumentUnloadFired);
     } else if (event->type() == EventTypeNames::DOMFocusIn || event->type() == EventTypeNames::DOMFocusOut) {
         if (LocalDOMWindow* executingWindow = this->executingWindow())
             UseCounter::count(executingWindow->document(), UseCounter::DOMFocusInOutEvent);
     } else if (event->type() == EventTypeNames::focusin || event->type() == EventTypeNames::focusout) {
         if (LocalDOMWindow* executingWindow = this->executingWindow())
             UseCounter::count(executingWindow->document(), UseCounter::FocusInOutEvent);
     } else if (event->type() == EventTypeNames::textInput) {
         if (LocalDOMWindow* executingWindow = this->executingWindow())
             UseCounter::count(executingWindow->document(), UseCounter::TextInputFired);
+    } else if (event->type() == EventTypeNames::touchstart) {
+        if (LocalDOMWindow* executingWindow = this->executingWindow())
+            UseCounter::count(executingWindow->document(), UseCounter::TouchStartFired);
+    } else if (event->type() == EventTypeNames::mousedown) {
+        if (LocalDOMWindow* executingWindow = this->executingWindow())
+            UseCounter::count(executingWindow->document(), UseCounter::MouseDownFired);
+    } else if (event->type() == EventTypeNames::pointerdown) {
+        if (LocalDOMWindow* executingWindow = this->executingWindow()) {
+            if (toPointerEvent(event)->pointerType() == "touch")

[dtapuska, 2016/07/19 20:01:54]

That is now just going to crash the process. I don't think that is good either.

[mustaq, 2016/07/19 20:36:07]

Yikes, done.

+                UseCounter::count(executingWindow->document(), UseCounter::PointerDownFiredForTouch);
+            UseCounter::count(executingWindow->document(), UseCounter::PointerDownFired);
+        }
     }
 
     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 86 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