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diff --git a/Source/WebCore/css/parser/CSSDeferredParser.cpp b/Source/WebCore/css/parser/CSSDeferredParser.cpp
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+++ b/Source/WebCore/css/parser/CSSDeferredParser.cpp
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+/*
+ * Copyright (C) 2016 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. ``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
+ * 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 "CSSDeferredParser.h"
+
+#include "CSSParserImpl.h"
+#include "StyleSheetContents.h"
+#include <wtf/text/WTFString.h>
+
+namespace WebCore {
+
+CSSDeferredParser::CSSDeferredParser(const CSSParserContext& context, const String& sheetText, StyleSheetContents& styleSheet)
+    : m_context(context)
+    , m_sheetText(sheetText)
+    , m_styleSheet(styleSheet.createWeakPtr())
+{
+}
+
+Ref<ImmutableStyleProperties> CSSDeferredParser::parseDeclaration(const CSSParserTokenRange& range)
+{
+    return CSSParserImpl::parseDeferredDeclaration(range, m_context, m_styleSheet.get());
+}
+
+void CSSDeferredParser::parseRuleList(const CSSParserTokenRange& range, Vector<RefPtr<StyleRuleBase>>& childRules)
+{
+    CSSParserImpl::parseDeferredRuleList(range, *this, childRules);
+}
+
+void CSSDeferredParser::parseKeyframeList(const CSSParserTokenRange& range, StyleRuleKeyframes&keyframesRule)
+{
+    CSSParserImpl::parseDeferredKeyframeList(range, *this, keyframesRule);
+}
+
+} // namespace WebCore