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diff --git a/Source/WebCore/html/GenericCachedHTMLCollection.cpp b/Source/WebCore/html/GenericCachedHTMLCollection.cpp
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+++ b/Source/WebCore/html/GenericCachedHTMLCollection.cpp
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+/*
+ * Copyright (C) 2015 Apple 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
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "GenericCachedHTMLCollection.h"
+
+#include "HTMLAppletElement.h"
+#include "HTMLNames.h"
+#include "HTMLObjectElement.h"
+#include "HTMLOptionElement.h"
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+template <CollectionTraversalType traversalType>
+bool GenericCachedHTMLCollection<traversalType>::elementMatches(Element& element) const
+{
+    switch (this->type()) {
+    case NodeChildren:
+        return true;
+    case DocImages:
+        return element.hasTagName(imgTag);
+    case DocScripts:
+        return element.hasTagName(scriptTag);
+    case DocForms:
+        return element.hasTagName(formTag);
+    case TableTBodies:
+        return element.hasTagName(tbodyTag);
+    case TRCells:
+        return element.hasTagName(tdTag) || element.hasTagName(thTag);
+    case TSectionRows:
+        return element.hasTagName(trTag);
+    case SelectedOptions:
+        return is<HTMLOptionElement>(element) && downcast<HTMLOptionElement>(element).selected();
+    case DataListOptions:
+        if (is<HTMLOptionElement>(element)) {
+            HTMLOptionElement& option = downcast<HTMLOptionElement>(element);
+            if (!option.isDisabledFormControl() && !option.value().isEmpty())
+                return true;
+        }
+        return false;
+    case MapAreas:
+        return element.hasTagName(areaTag);
+    case DocApplets:
+        return is<HTMLAppletElement>(element) || (is<HTMLObjectElement>(element) && downcast<HTMLObjectElement>(element).containsJavaApplet());
+    case DocEmbeds:
+        return element.hasTagName(embedTag);
+    case DocLinks:
+        return (element.hasTagName(aTag) || element.hasTagName(areaTag)) && element.hasAttributeWithoutSynchronization(hrefAttr);
+    case DocAnchors:
+        return element.hasTagName(aTag) && element.hasAttributeWithoutSynchronization(nameAttr);
+    case ByClass:
+    case ByTag:
+    case ByHTMLTag:
+    case AllDescendants:
+    case DocAll:
+    case DocumentNamedItems:
+    case FormControls:
+    case SelectOptions:
+    case TableRows:
+    case WindowNamedItems:
+        break;
+    }
+    // Remaining collection types have their own CachedHTMLCollection subclasses and are not using GenericCachedHTMLCollection.
+    ASSERT_NOT_REACHED();
+    return false;
+}
+template bool GenericCachedHTMLCollection<CollectionTraversalType::Descendants>::elementMatches(Element&) const;
+template bool GenericCachedHTMLCollection<CollectionTraversalType::ChildrenOnly>::elementMatches(Element&) const;
+
+} // namespace WebCore