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diff --git a/WebCore/rendering/RenderRubyRun.h b/WebCore/rendering/RenderRubyRun.h
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+/*
+ * Copyright (C) 2009 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 RenderRubyRun_h
+#define RenderRubyRun_h
+
+#include "RenderBlock.h"
+
+namespace WebCore {
+
+class RenderRubyBase;
+class RenderRubyText;
+
+// RenderRubyRun are 'inline-block/table' like objects,and wrap a single pairing of a ruby base with its ruby text(s).
+// See RenderRuby.h for further comments on the structure
+
+class RenderRubyRun : public RenderBlock {
+public:
+    RenderRubyRun(Node*);
+    virtual ~RenderRubyRun();
+
+    virtual void destroy();
+
+    virtual const char* renderName() const { return "RenderRubyRun (anonymous)"; }
+
+    virtual bool isRubyRun() const { return true; }
+
+    bool hasRubyText() const;
+    bool hasRubyBase() const;
+    bool isEmpty() const;
+    RenderRubyText* rubyText() const;
+    RenderRubyBase* rubyBase() const;
+    RenderRubyBase* rubyBaseSafe(); // creates the base if it doesn't already exist
+
+    virtual bool isChildAllowed(RenderObject*, RenderStyle*) const;
+    virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0);
+    virtual void removeChild(RenderObject* child);
+
+    virtual RenderBlock* firstLineBlock() const;
+    virtual void updateFirstLetter();
+
+    static RenderRubyRun* staticCreateRubyRun(const RenderObject* parentRuby);
+
+protected:
+    RenderRubyBase* createRubyBase() const;
+    
+private:
+    bool m_beingDestroyed;
+};
+
+} // namespace WebCore
+
+#endif // RenderRubyRun_h