Fix: Prerendering was confusing SessionService to not save sessionStorage.

content/browser/dom_storage/session_storage_namespace_impl.h

 // Copyright (c) 2012 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_DOM_STORAGE_SESSION_STORAGE_NAMESPACE_IMPL_H_
 #define CONTENT_BROWSER_DOM_STORAGE_SESSION_STORAGE_NAMESPACE_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
@@ skipping 21 matching lines @@
 
   // Constructs a |SessionStorageNamespaceImpl| and assigns |persistent_id|
   // to it. Allocates a new non-persistent ID.
   SessionStorageNamespaceImpl(DOMStorageContextImpl* context,
                               const std::string& persistent_id);
 
   // content::SessionStorageNamespace implementation.
   virtual int64 id() const OVERRIDE;
   virtual const std::string& persistent_id() const OVERRIDE;
   virtual void SetShouldPersist(bool should_persist) OVERRIDE;
+  virtual bool should_persist() const OVERRIDE;
 
   SessionStorageNamespaceImpl* Clone();
   bool IsFromContext(DOMStorageContextImpl* context);
 
  private:
   explicit SessionStorageNamespaceImpl(dom_storage::DomStorageSession* clone);
   virtual ~SessionStorageNamespaceImpl();
 
   scoped_refptr<dom_storage::DomStorageSession> session_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionStorageNamespaceImpl);
 };
 
 #endif  // CONTENT_BROWSER_DOM_STORAGE_SESSION_STORAGE_NAMESPACE_IMPL_H_