Merge DOMSettableTokensList into DOMTokensList

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

Index: third_party/WebKit/Source/core/dom/DOMTokenList.cpp
diff --git a/third_party/WebKit/Source/core/dom/DOMTokenList.cpp b/third_party/WebKit/Source/core/dom/DOMTokenList.cpp
index fe524336ed681971e9ce9d44c1d54252401a9271..22645cfa083755089119fdd0f8e93f652556a608 100644
--- a/third_party/WebKit/Source/core/dom/DOMTokenList.cpp
+++ b/third_party/WebKit/Source/core/dom/DOMTokenList.cpp
@@ -287,9 +287,29 @@ AtomicString DOMTokenList::removeTokens(const AtomicString& input, const Vector<
     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