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diff --git a/chromium/third_party/WebKit/Source/core/css/invalidation/StyleSheetInvalidationAnalysis.h b/chromium/third_party/WebKit/Source/core/css/invalidation/StyleSheetInvalidationAnalysis.h
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+++ b/chromium/third_party/WebKit/Source/core/css/invalidation/StyleSheetInvalidationAnalysis.h
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+/*
+ * Copyright (C) 2012 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 COMPUTER, 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 COMPUTER, 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.
+ */
+
+#ifndef StyleSheetInvalidationAnalysis_h
+#define StyleSheetInvalidationAnalysis_h
+
+#include "platform/heap/Handle.h"
+#include "wtf/HashSet.h"
+#include "wtf/Vector.h"
+#include "wtf/text/StringImpl.h"
+
+namespace WebCore {
+
+class Document;
+class Node;
+class StyleSheetContents;
+
+class StyleSheetInvalidationAnalysis {
+public:
+    StyleSheetInvalidationAnalysis(const WillBeHeapVector<RawPtrWillBeMember<StyleSheetContents> >&);
+
+    bool dirtiesAllStyle() const { return m_dirtiesAllStyle; }
+    void invalidateStyle(Document&);
+
+private:
+
+    void analyzeStyleSheet(StyleSheetContents*);
+
+    bool m_dirtiesAllStyle;
+    HashSet<StringImpl*> m_idScopes;
+    HashSet<StringImpl*> m_classScopes;
+    Vector<Node*, 8> m_scopingNodes;
+};
+
+}
+
+#endif