Stop clamping tabIndex to short range

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

 /*
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 337 matching lines @@
 }
 
 bool HTMLSlotElement::findHostChildWithSameSlotName() const {
   ShadowRoot* root = containingShadowRoot();
   DCHECK(root);
   DCHECK(root->isV1());
   SlotAssignment& assignment = root->ensureSlotAssignment();
   return assignment.findHostChildBySlotName(name());
 }
 
-short HTMLSlotElement::tabIndex() const {
+int HTMLSlotElement::tabIndex() const {
   return Element::tabIndex();
 }
 
 DEFINE_TRACE(HTMLSlotElement) {
   visitor->trace(m_assignedNodes);
   visitor->trace(m_distributedNodes);
   visitor->trace(m_oldDistributedNodes);
   visitor->trace(m_distributedIndices);
   HTMLElement::trace(visitor);
 }
 
 }  // namespace blink