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diff --git a/chrome/browser/page_state.h b/chrome/browser/page_state.h
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+// Copyright 2008, 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 CHROME_BROWSER_PAGE_STATE_H__
+#define CHROME_BROWSER_PAGE_STATE_H__
+
+#include "base/basictypes.h"
+#include "base/scoped_ptr.h"
+#include "base/values.h"
+
+class GURL;
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// PageState
+//
+// PageState represents a collection of key value pairs that can be
+// represented as an url or a byte array. It is used by synthetic pages such
+// as the destination tab to store and parse navigation states
+//
+/////////////////////////////////////////////////////////////////////////////
+class PageState {
+ public:
+  PageState() : state_(new DictionaryValue) {}
+  ~PageState() {}
+
+  // Init with the provided url
+  void InitWithURL(const GURL& url);
+
+  // Init with the provided bytes
+  void InitWithBytes(const std::string& bytes);
+
+  // Return a string representing this state
+  void GetByteRepresentation(std::string* out) const;
+
+  // Conveniences to set and retreive an int
+  void SetIntProperty(const std::wstring& key, int value);
+  bool GetIntProperty(const std::wstring& key, int* value) const;
+
+  // Conveniences to set and retreive an int64.
+  void SetInt64Property(const std::wstring& key, int64 value);
+  bool GetInt64Property(const std::wstring& key, int64* value) const;
+
+  // Set / Get string properties
+  void SetProperty(const std::wstring& key, const std::wstring& value);
+  bool GetProperty(const std::wstring& key, std::wstring* value) const;
+
+  // Creates a copy of this page state. It is up to the caller to delete the
+  // returned value.
+  PageState* Copy() const;
+
+ private:
+
+  // our actual state collection
+  scoped_ptr<DictionaryValue> state_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(PageState);
+};
+
+
+#endif  // CHROME_BROWSER_PAGE_STATE_H__