Report print jobs that are aborted by CUPS as errors.

chrome/browser/chromeos/printing/cups_print_job_notification_manager.h

 // Copyright 2016 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_BROWSER_CHROMEOS_PRINTING_CUPS_PRINT_JOB_NOTIFICATION_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_PRINTING_CUPS_PRINT_JOB_NOTIFICATION_MANAGER_H_
 
 #include <memory>
 #include <string>
 #include <unordered_map>
@@ skipping 18 matching lines @@
   ~CupsPrintJobNotificationManager() override;
 
   // CupsPrintJobManager::Observer overrides:
   void OnPrintJobCreated(CupsPrintJob* job) override;
   void OnPrintJobStarted(CupsPrintJob* job) override;
   void OnPrintJobUpdated(CupsPrintJob* job) override;
   void OnPrintJobSuspended(CupsPrintJob* job) override;
   void OnPrintJobResumed(CupsPrintJob* job) override;
   void OnPrintJobDone(CupsPrintJob* job) override;
   void OnPrintJobError(CupsPrintJob* job) override;
+  void OnPrintJobCancelled(CupsPrintJob* job) override;
 
  private:
+  void UpdateNotification(CupsPrintJob* job);
+
   PrintJobNotificationMap notification_map_;
   CupsPrintJobManager* print_job_manager_;
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(CupsPrintJobNotificationManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_PRINTING_CUPS_PRINT_JOB_NOTIFICATION_MANAGER_H_