Remove all support for <applet> handling in Chrome.

Source/core/html/HTMLCollection.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003-2008, 2011, 2012, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Samsung Electronics. All rights reserved.
  *
  * 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.
@@ skipping 210 matching lines @@
         return element.hasTagName(trTag);
     case SelectOptions:
         return toHTMLOptionsCollection(htmlCollection).elementMatches(element);
     case SelectedOptions:
         return isHTMLOptionElement(element) && toHTMLOptionElement(element).selected();
     case DataListOptions:
         return toHTMLDataListOptionsCollection(htmlCollection).elementMatches(element);
     case MapAreas:
         return element.hasTagName(areaTag);
     case DocApplets:
-        return element.hasTagName(appletTag) || (isHTMLObjectElement(element) && toHTMLObjectElement(element).containsJavaApplet());
+        return isHTMLObjectElement(element) && toHTMLObjectElement(element).containsJavaApplet();
     case DocEmbeds:
         return element.hasTagName(embedTag);
     case DocLinks:
         return (element.hasTagName(aTag) || element.hasTagName(areaTag)) && element.fastHasAttribute(hrefAttr);
     case DocAnchors:
         return element.hasTagName(aTag) && element.fastHasAttribute(nameAttr);
     case ClassCollectionType:
     case TagCollectionType:
     case HTMLTagCollectionType:
     case DocAll:
@@ skipping 62 matching lines @@
     ASSERT_NOT_REACHED();
     return nullptr;
 }
 
 static inline bool nameShouldBeVisibleInDocumentAll(const HTMLElement& element)
 {
     // http://www.whatwg.org/specs/web-apps/current-work/multipage/common-dom-interfaces.html#dom-htmlallcollection-nameditem:
     // The document.all collection returns only certain types of elements by name,
     // although it returns any type of element by id.
     return element.hasTagName(aTag)
-        || element.hasTagName(appletTag)
         || element.hasTagName(areaTag)
         || element.hasTagName(embedTag)
         || element.hasTagName(formTag)
         || element.hasTagName(frameTag)
         || element.hasTagName(framesetTag)
         || element.hasTagName(iframeTag)
         || element.hasTagName(imgTag)
         || element.hasTagName(inputTag)
         || element.hasTagName(objectTag)
         || element.hasTagName(selectTag);
@@ skipping 174 matching lines @@
 }
 
 DEFINE_TRACE(HTMLCollection)
 {
     visitor->trace(m_namedItemCache);
     visitor->trace(m_collectionItemsCache);
     LiveNodeListBase::trace(visitor);
 }
 
 } // namespace blink