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diff --git a/WebCore/css/CSSPropertySourceData.h b/WebCore/css/CSSPropertySourceData.h
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+/*
+ * Copyright (c) 2010 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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 CSSPropertySourceData_h
+#define CSSPropertySourceData_h
+
+#include "PlatformString.h"
+#include <utility>
+#include <wtf/Forward.h>
+#include <wtf/HashMap.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class CSSStyleRule;
+
+struct SourceRange {
+    SourceRange();
+    SourceRange(unsigned start, unsigned end);
+    SourceRange& operator=(const SourceRange& other);
+
+    unsigned start;
+    unsigned end;
+};
+
+struct CSSPropertySourceData {
+    static void init();
+
+    CSSPropertySourceData(const String& name, const String& value, bool important, bool parsedOk, const SourceRange& range);
+    CSSPropertySourceData(const CSSPropertySourceData& other);
+    CSSPropertySourceData();
+    ALWAYS_INLINE ~CSSPropertySourceData() { }
+
+    CSSPropertySourceData& operator=(const CSSPropertySourceData& other);
+    String toString() const;
+    unsigned hash() const;
+
+    String name;
+    String value;
+    bool important;
+    bool parsedOk;
+    SourceRange range;
+};
+
+#ifndef CSSPROPERTYSOURCEDATA_HIDE_GLOBALS
+extern const CSSPropertySourceData emptyCSSPropertySourceData;
+#endif
+
+struct CSSStyleSourceData : public RefCounted<CSSStyleSourceData> {
+    static PassRefPtr<CSSStyleSourceData> create()
+    {
+        return adoptRef(new CSSStyleSourceData());
+    }
+
+    // Range of the style text in the enclosing source.
+    SourceRange styleBodyRange;
+    Vector<CSSPropertySourceData> propertyData;
+};
+typedef HashMap<CSSStyleRule*, RefPtr<CSSStyleSourceData> > StyleRuleRangeMap;
+
+} // namespace WebCore
+
+#endif // CSSPropertySourceData_h