Restore sessionStorage when chrome restarts.

content/browser/in_process_webkit/dom_storage_message_filter.h

Index: content/browser/in_process_webkit/dom_storage_message_filter.h
diff --git a/content/browser/in_process_webkit/dom_storage_message_filter.h b/content/browser/in_process_webkit/dom_storage_message_filter.h
index 1717320eb879ab91ed38af9cee8a53d18c2a4e6d..1f767672f65c03eac0a32077551bda26fb9cf7a6 100644
--- a/content/browser/in_process_webkit/dom_storage_message_filter.h
+++ b/content/browser/in_process_webkit/dom_storage_message_filter.h
@@ -67,6 +67,9 @@ class DOMStorageMessageFilter : public BrowserMessageFilter {
     return webkit_context_->dom_storage_context();
   }
 
+  void NotifyOnUIThread(int64 namespace_id,
+                        const FilePath& session_storage_directory);
+
   // Use whenever there's a chance OnStorageEvent will be called.
   class ScopedStorageEventContext {
    public: