| Index: third_party/WebKit/Source/core/events/EventTarget.cpp
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| diff --git a/third_party/WebKit/Source/core/events/EventTarget.cpp b/third_party/WebKit/Source/core/events/EventTarget.cpp
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| index 19d5091f15ebdd4558136670d22ba78525c43cb5..b6196b5a5759518ddaad490125bcb550e619f540 100644
 | 
| --- a/third_party/WebKit/Source/core/events/EventTarget.cpp
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| +++ b/third_party/WebKit/Source/core/events/EventTarget.cpp
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| @@ -295,7 +295,11 @@ bool EventTarget::addEventListenerInternal(const AtomicString& eventType, EventL
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|  
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|  void EventTarget::addedEventListener(const AtomicString& eventType, RegisteredEventListener& registeredListener)
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|  {
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| -    if (EventUtil::isPointerEventType(eventType)) {
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| +    if (eventType == EventTypeNames::auxclick) {
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| +        if (LocalDOMWindow* executingWindow = this->executingWindow()) {
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| +            UseCounter::count(executingWindow->document(), UseCounter::AuxclickAddListenerCount);
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| +        }
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| +    } else if (EventUtil::isPointerEventType(eventType)) {
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|          if (LocalDOMWindow* executingWindow = this->executingWindow()) {
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|              UseCounter::count(executingWindow->document(), UseCounter::PointerEventAddListenerCount);
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|          }
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| 
 |