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diff --git a/Source/WebKit/android/jni/WebHistory.h b/Source/WebKit/android/jni/WebHistory.h
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+++ b/Source/WebKit/android/jni/WebHistory.h
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+/*
+ * Copyright 2006, The Android Open Source Project
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``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 ANDROID_WEBKIT_WEBHISTORY_H
+#define ANDROID_WEBKIT_WEBHISTORY_H
+
+#include "AndroidWebHistoryBridge.h"
+
+#include <jni.h>
+#include <wtf/RefCounted.h>
+#include <wtf/Vector.h>
+
+namespace android {
+
+class AutoJObject;
+
+class WebHistory {
+public:
+    static jbyteArray Flatten(JNIEnv*, WTF::Vector<char>&, WebCore::HistoryItem*);
+    static void AddItem(const AutoJObject&, WebCore::HistoryItem*);
+    static void RemoveItem(const AutoJObject&, int);
+    static void UpdateHistoryIndex(const AutoJObject&, int);
+};
+
+// there are two scale factors saved with each history item. m_scale reflects the
+// viewport scale factor, default to 100 means 100%. m_textWrapScale records
+// the scale factor for wrapping the text paragraph.
+class WebHistoryItem : public WebCore::AndroidWebHistoryBridge {
+public:
+    WebHistoryItem(WebHistoryItem* parent)
+        : WebCore::AndroidWebHistoryBridge(0)
+        , m_parent(parent)
+        , m_object(NULL) { }
+    WebHistoryItem(JNIEnv*, jobject, WebCore::HistoryItem*);
+    ~WebHistoryItem();
+    void updateHistoryItem(WebCore::HistoryItem* item);
+    void setParent(WebHistoryItem* parent) { m_parent = parent; }
+    WebHistoryItem* parent() const { return m_parent.get(); }
+private:
+    RefPtr<WebHistoryItem> m_parent;
+    jweak m_object;
+};
+
+};
+
+#endif