Fix: Prerendering was confusing SessionService to not save sessionStorage.

content/browser/dom_storage/session_storage_namespace_impl.cc

 // 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.
 
 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
 
 #include "content/browser/dom_storage/dom_storage_context_impl.h"
 #include "webkit/dom_storage/dom_storage_session.h"
 
 using dom_storage::DomStorageContext;
@@ skipping 20 matching lines @@
 }
 
 const std::string& SessionStorageNamespaceImpl::persistent_id() const {
   return session_->persistent_namespace_id();
 }
 
 void SessionStorageNamespaceImpl::SetShouldPersist(bool should_persist) {
   session_->SetShouldPersist(should_persist);
 }
 
+bool SessionStorageNamespaceImpl::should_persist() const {
+  return session_->should_persist();
+}
+
 SessionStorageNamespaceImpl* SessionStorageNamespaceImpl::Clone() {
   return new SessionStorageNamespaceImpl(session_->Clone());
 }
 
 bool SessionStorageNamespaceImpl::IsFromContext(
     DOMStorageContextImpl* context) {
   return session_->IsFromContext(context->context());
 }
 
 SessionStorageNamespaceImpl::SessionStorageNamespaceImpl(
     DomStorageSession* clone)
     : session_(clone) {
 }
 
 SessionStorageNamespaceImpl::~SessionStorageNamespaceImpl() {
 }