Add use-counters for some HTML elements.

Source/core/html/HTMLDetailsElement.cpp

 /*
  * Copyright (C) 2010, 2011 Nokia Corporation and/or its subsidiary(-ies)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 12 matching lines @@
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/CSSPropertyNames.h"
 #include "core/CSSValueKeywords.h"
 #include "core/HTMLNames.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/Text.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/events/Event.h"
 #include "core/events/EventSender.h"
+#include "core/frame/UseCounter.h"
 #include "core/html/HTMLContentElement.h"
 #include "core/html/HTMLDivElement.h"
 #include "core/html/HTMLSummaryElement.h"
 #include "core/html/shadow/ShadowElementNames.h"
 #include "core/rendering/RenderBlockFlow.h"
 #include "platform/text/PlatformLocale.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 static DetailsEventSender& detailsToggleEventSender()
 {
     DEFINE_STATIC_LOCAL(DetailsEventSender, sharedToggleEventSender, (EventTypeNames::toggle));
     return sharedToggleEventSender;
 }
 
 PassRefPtrWillBeRawPtr<HTMLDetailsElement> HTMLDetailsElement::create(Document& document)
 {
     RefPtrWillBeRawPtr<HTMLDetailsElement> details = adoptRefWillBeNoop(new HTMLDetailsElement(document));
     details->ensureUserAgentShadowRoot();
     return details.release();
 }
 
 HTMLDetailsElement::HTMLDetailsElement(Document& document)
     : HTMLElement(detailsTag, document)
     , m_isOpen(false)
 {
     ScriptWrappable::init(this);
+    UseCounter::count(document, UseCounter::DetailsElement);
 }
 
 HTMLDetailsElement::~HTMLDetailsElement()
 {
     detailsToggleEventSender().cancelEvent(this);
 }
 
 void HTMLDetailsElement::dispatchPendingEvent(DetailsEventSender* eventSender)
 {
     ASSERT_UNUSED(eventSender, eventSender == &detailsToggleEventSender());
@@ skipping 69 matching lines @@
 {
     setAttribute(openAttr, m_isOpen ? nullAtom : emptyAtom);
 }
 
 bool HTMLDetailsElement::isInteractiveContent() const
 {
     return true;
 }
 
 }