Clarify devtools console log when a passive event listener is preventDefaulted.

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 47 matching lines @@
 
 namespace blink {
 namespace {
 
 enum PassiveForcedListenerResultType {
     PreventDefaultNotCalled,
     DocumentLevelTouchPreventDefaultCalled,
     PassiveForcedListenerResultTypeMax
 };
 
+Event::PassiveMode eventPassiveMode(const RegisteredEventListener& eventListener)
+{
+    if (!eventListener.passive())
+        return Event::PassiveMode::NotPassive;
+    if (eventListener.passiveForcedForDocumentTarget())
+        return Event::PassiveMode::PassiveForcedDocumentLevel;
+    return Event::PassiveMode::Passive;
+}
+
 Settings* windowSettings(LocalDOMWindow* executingWindow)
 {
     if (executingWindow) {
         if (LocalFrame* frame = executingWindow->frame()) {
             return frame->settings();
         }
     }
     return nullptr;
 }
 
@@ skipping 542 matching lines @@
         if (event->eventPhase() == Event::kCapturingPhase && !registeredListener.capture())
             continue;
         if (event->eventPhase() == Event::kBubblingPhase && registeredListener.capture())
             continue;
 
         // If stopImmediatePropagation has been called, we just break out immediately, without
         // handling any more events on this target.
         if (event->immediatePropagationStopped())
             break;
 
-        event->setHandlingPassive(registeredListener.passive());
+        event->setHandlingPassive(eventPassiveMode(registeredListener));
         bool passiveForced = registeredListener.passiveForcedForDocumentTarget();
 
         InspectorInstrumentation::NativeBreakpoint nativeBreakpoint(context, this, event);
 
         EventListener* listener = registeredListener.listener();
 
         // To match Mozilla, the AT_TARGET phase fires both capturing and bubbling
         // event listeners, even though that violates some versions of the DOM spec.
         listener->handleEvent(context, event);
         firedListener = true;
 
         // If we're about to report this event listener as blocking, make sure it wasn't
         // removed while handling the event.
         if (shouldReportBlockedEvent && i > 0 && entry[i - 1].listener() == listener
             && !entry[i - 1].passive() && !entry[i - 1].blockedEventWarningEmitted() && !event->defaultPrevented()) {
             reportBlockedEvent(context, event, &entry[i - 1], now - event->platformTimeStamp());
         }
 
         if (passiveForced) {
             DEFINE_STATIC_LOCAL(EnumerationHistogram, passiveForcedHistogram, ("Event.PassiveForcedEventDispatchCancelled", PassiveForcedListenerResultTypeMax));
             PassiveForcedListenerResultType breakageType = PreventDefaultNotCalled;
             if (event->preventDefaultCalledDuringPassive())
                 breakageType = DocumentLevelTouchPreventDefaultCalled;
 
             passiveForcedHistogram.count(breakageType);
         }
 
-        event->setHandlingPassive(false);
+        event->setHandlingPassive(Event::PassiveMode::NotPassive);
 
         CHECK_LE(i, size);
     }
     d->firingEventIterators->removeLast();
     return firedListener;
 }
 
 DispatchEventResult EventTarget::dispatchEventResult(const Event& event)
 {
     if (event.defaultPrevented())
@@ skipping 28 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