Don't delete print system on connector stop.

chrome/service/cloud_print/cloud_print_connector.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 CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_CONNECTOR_H_
 #define CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_CONNECTOR_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 140 matching lines @@
   void OnPrintersAvailable();
   void OnPrinterRegister(const printing::PrinterBasicInfo& info);
   void OnPrinterDelete(const std::string& name);
 
   void OnReceivePrinterCaps(
       bool succeeded,
       const std::string& printer_name,
       const printing::PrinterCapsAndDefaults& caps_and_defaults);
 
   bool IsSamePrinter(const std::string& name1, const std::string& name2) const;
+  bool InitPrintSystem();
 
   // CloudPrintConnector client.
   Client* client_;
   // Print system settings.
   scoped_ptr<DictionaryValue> print_system_settings_;
   // Pointer to current print system.
   scoped_refptr<cloud_print::PrintSystem> print_system_;
   // Watcher for print system updates.
   scoped_refptr<cloud_print::PrintSystem::PrintServerWatcher>
       print_server_watcher_;
   // Id of the Cloud Print proxy.
   std::string proxy_id_;
   // Cloud Print server url.
   GURL cloud_print_server_url_;
   // A map of printer id to job handler.
   typedef std::map<std::string, scoped_refptr<PrinterJobHandler> >
       JobHandlerMap;
   JobHandlerMap job_handler_map_;
   // Next response handler.
   ResponseHandler next_response_handler_;
-  // The list of peding tasks to be done in the background.
+  // The list of pending tasks to be done in the background.
   std::list<PendingTask> pending_tasks_;
   // The CloudPrintURLFetcher instance for the current request.
   scoped_refptr<CloudPrintURLFetcher> request_;
   // The CloudPrintURLFetcher instance for the user message request.
   scoped_refptr<CloudPrintURLFetcher> user_message_request_;
 
   DISALLOW_COPY_AND_ASSIGN(CloudPrintConnector);
 };
 
 #endif  // CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_CONNECTOR_H_