Merge DOMSettableTokensList into DOMTokensList

third_party/WebKit/Source/core/dom/DOMTokenList.cpp

 /*
  * Copyright (C) 2010 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:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 269 matching lines @@
             output.append(' ');
     }
 
     size_t j = output.length();
     if (j > 0 && isHTMLSpace<UChar>(output[j - 1]))
         output.resize(j - 1);
 
     return output.toAtomicString();
 }
 
+void DOMTokenList::setValue(const AtomicString& value)
+{
+    m_value = value;
+    m_tokens.set(value, SpaceSplitString::ShouldNotFoldCase);
+    if (m_observer)
+        m_observer->valueWasSet();
+}
+
+bool DOMTokenList::containsInternal(const AtomicString& token) const
+{
+    return m_tokens.contains(token);
+}
+
 ValueIterable<String>::IterationSource* DOMTokenList::startIteration(ScriptState*, ExceptionState&)
 {
     return new DOMTokenListIterationSource(this);
 }
 
+const AtomicString DOMTokenList::item(unsigned index) const
+{
+    if (index >= length())
+        return AtomicString();
+    return m_tokens[index];
+}
+
 } // namespace blink