Restore sessionStorage when chrome restarts.

content/browser/in_process_webkit/dom_storage_area.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_IN_PROCESS_WEBKIT_DOM_STORAGE_AREA_H_
 #define CONTENT_BROWSER_IN_PROCESS_WEBKIT_DOM_STORAGE_AREA_H_
 #pragma once
 
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
@@ skipping 21 matching lines @@
       const string16& key, const string16& value,
       WebKit::WebStorageArea::Result* result);
   NullableString16 RemoveItem(const string16& key);
   bool Clear();
   void PurgeMemory();
 
   int64 id() const { return id_; }
 
   DOMStorageNamespace* owner() const { return owner_; }
 
+  void CopyDataTo(DOMStorageArea* other);
+
  private:
   // Creates the underlying WebStorageArea on demand.
   void CreateWebStorageAreaIfNecessary();
 
   // The origin this storage area represents.
   string16 origin_;
   GURL origin_url_;
 
   // The storage area we wrap.
   scoped_ptr<WebKit::WebStorageArea> storage_area_;
@@ skipping 14 matching lines @@
 struct hash<DOMStorageArea*> {
   std::size_t operator()(DOMStorageArea* const& p) const {
     return reinterpret_cast<std::size_t>(p);
   }
 };
 
 }  // namespace __gnu_cxx
 #endif
 
 #endif  // CONTENT_BROWSER_IN_PROCESS_WEBKIT_DOM_STORAGE_AREA_H_