Stop clamping tabIndex to short range

third_party/WebKit/Source/core/html/HTMLElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004-2008, 2013, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2011 Motorola Mobility. 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
@@ skipping 670 matching lines @@
 
 void HTMLElement::accessKeyAction(bool sendMouseEvents) {
   dispatchSimulatedClick(
       0, sendMouseEvents ? SendMouseUpDownEvents : SendNoEvents);
 }
 
 String HTMLElement::title() const {
   return fastGetAttribute(titleAttr);
 }
 
-short HTMLElement::tabIndex() const {
+int HTMLElement::tabIndex() const {
   if (supportsFocus())
     return Element::tabIndex();
   return -1;
 }
 
 TranslateAttributeMode HTMLElement::translateAttributeMode() const {
   const AtomicString& value = getAttribute(translateAttr);
 
   if (value == nullAtom)
     return TranslateAttributeInherit;
@@ skipping 501 matching lines @@
 
 #ifndef NDEBUG
 
 // For use in the debugger
 void dumpInnerHTML(blink::HTMLElement*);
 
 void dumpInnerHTML(blink::HTMLElement* element) {
   printf("%s\n", element->innerHTML().ascii().data());
 }
 #endif