Remove all support for <applet> handling in Chrome.

Source/core/html/HTMLObjectElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 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
@@ skipping 393 matching lines @@
     if (MIMETypeRegistry::isJavaAppletMIMEType(getAttribute(typeAttr)))
         return true;
 
     for (HTMLElement& child : Traversal<HTMLElement>::childrenOf(*this)) {
         if (isHTMLParamElement(child)
             && equalIgnoringCase(child.getNameAttribute(), "type")
             && MIMETypeRegistry::isJavaAppletMIMEType(child.getAttribute(valueAttr).string()))
             return true;
         if (isHTMLObjectElement(child) && toHTMLObjectElement(child).containsJavaApplet())
             return true;
-        if (isHTMLAppletElement(child))
-            return true;
     }
 
     return false;
 }
 
 void HTMLObjectElement::didMoveToNewDocument(Document& oldDocument)
 {
     FormAssociatedElement::didMoveToNewDocument(oldDocument);
     HTMLPlugInElement::didMoveToNewDocument(oldDocument);
 }
@@ skipping 22 matching lines @@
 {
     return fastHasAttribute(usemapAttr);
 }
 
 bool HTMLObjectElement::useFallbackContent() const
 {
     return HTMLPlugInElement::useFallbackContent() || m_useFallbackContent;
 }
 
 }