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diff --git a/src/javascript/jsc/bindings/webcore/CommonAtomStrings.h b/src/javascript/jsc/bindings/webcore/CommonAtomStrings.h
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+/*
+ * Copyright (C) 2022 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.
+ */
+
+#pragma once
+
+#include <wtf/NeverDestroyed.h>
+#include <wtf/text/AtomString.h>
+
+namespace WebCore {
+
+#define WEBCORE_COMMON_ATOM_STRINGS_FOR_EACH_KEYWORD(macro) \
+    macro(alternative, "alternative") \
+    macro(auto, "auto") \
+    macro(captions, "captions") \
+    macro(commentary, "commentary") \
+    macro(cssContentType, "text/css") \
+    macro(eager, "eager") \
+    macro(email, "email") \
+    macro(false, "false") \
+    macro(lazy, "lazy") \
+    macro(main, "main") \
+    macro(none, "none") \
+    macro(off, "off") \
+    macro(on, "on") \
+    macro(plaintextOnly, "plaintext-only") \
+    macro(reset, "reset") \
+    macro(search, "search") \
+    macro(star, "*") \
+    macro(submit, "submit") \
+    macro(subtitles, "subtitles") \
+    macro(tel, "tel") \
+    macro(text, "text") \
+    macro(textPlainContentType, "text/plain") \
+    macro(true, "true") \
+    macro(url, "url") \
+    macro(xml, "xml") \
+    macro(xmlns, "xmlns")
+
+
+#define DECLARE_COMMON_ATOM(atomName, atomValue) \
+    extern MainThreadLazyNeverDestroyed<const AtomString> atomName ## AtomData; \
+    inline const AtomString& atomName ## Atom() { return atomName ## AtomData.get(); }
+
+WEBCORE_COMMON_ATOM_STRINGS_FOR_EACH_KEYWORD(DECLARE_COMMON_ATOM)
+
+#undef DECLARE_COMMON_ATOM
+
+WEBCORE_EXPORT void initializeCommonAtomStrings();
+
+} // namespace WebCore