Cleanup jobs which have failed.

chrome/browser/chromeos/printing/cups_print_job.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_H_
 #define CHROME_BROWSER_CHROMEOS_PRINTING_CUPS_PRINT_JOB_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 34 matching lines @@
 
   // Returns a unique id for the print job.
   std::string GetUniqueId() const;
 
   // Getters.
   const Printer& printer() const { return printer_; }
   int job_id() const { return job_id_; }
   const std::string& document_title() const { return document_title_; }
   int total_page_number() const { return total_page_number_; }
   int printed_page_number() const { return printed_page_number_; }
+  bool expired() const { return expired_; }
   State state() const { return state_; }
   ErrorCode error_code() const { return error_code_; }
 
   // Setters.
   void set_printed_page_number(int page_number) {
     printed_page_number_ = page_number;
   }
+  void set_expired(bool expired) { expired_ = expired; }
   void set_state(State state) { state_ = state; }
   void set_error_code(ErrorCode error_code) { error_code_ = error_code; }
 
   // Returns true if |state_| represents a terminal state.
   bool IsJobFinished();
 
  private:
   Printer printer_;
   int job_id_;
 
   std::string document_title_;
   int total_page_number_ = 0;
   int printed_page_number_ = 0;
 
+  // True if the job has expired due to timeout.
+  bool expired_ = false;

[xdai1, 2017/03/16 19:56:16]

Maybe we can merge this variable to ErrorCode?  

[skau, 2017/03/16 22:14:36]

We could.  But I think it'll be easier to maintain with separate fields. 
ErrorCode indicates what the problem is.  expired indicates that the job needs
to be removed from the print queue.

[xdai1, 2017/03/16 22:56:14]

Acknowledged.

+
   State state_ = State::STATE_NONE;
   ErrorCode error_code_ = ErrorCode::NO_ERROR;
 
   DISALLOW_COPY_AND_ASSIGN(CupsPrintJob);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_PRINTING_CUPS_PRINT_JOB_H_