Use job id from JobEventDetails to create CupsPrintJobs.

chrome/browser/chromeos/printing/cups_print_job_manager_impl.h

Index: chrome/browser/chromeos/printing/cups_print_job_manager_impl.h
diff --git a/chrome/browser/chromeos/printing/cups_print_job_manager_impl.h b/chrome/browser/chromeos/printing/cups_print_job_manager_impl.h
index 04f0cdb456bcfda02d16976896596040f4d70f95..afd64c901063fbc04acce7ef4e7731903616b7f5 100644
--- a/chrome/browser/chromeos/printing/cups_print_job_manager_impl.h
+++ b/chrome/browser/chromeos/printing/cups_print_job_manager_impl.h
@@ -44,10 +44,13 @@ class CupsPrintJobManagerImpl : public CupsPrintJobManager,
   // |title| with the pages |total_page_number|.
   bool CreatePrintJob(const std::string& printer_name,
                       const std::string& title,
+                      int job_id,
                       int total_page_number);
 
-  // Schedule a query of CUPS for print job status.
+  // Schedule a query of CUPS for print job status with the default delay.
   void ScheduleQuery();
+  // Schedule a query of CUPS for print job status with a delay of |delay|.
+  void ScheduleQuery(const base::TimeDelta& delay);
 
   // Query CUPS for print job status.
   void QueryCups();
@@ -61,6 +64,9 @@ class CupsPrintJobManagerImpl : public CupsPrintJobManager,
   // Ongoing print jobs.
   std::map<std::string, std::unique_ptr<CupsPrintJob>> jobs_;
 
+  // Prevents multiple queries from being scheduled simultaneously.
+  bool in_query_ = false;
+
   ::printing::CupsConnection cups_connection_;
   content::NotificationRegistrar registrar_;
   base::WeakPtrFactory<CupsPrintJobManagerImpl> weak_ptr_factory_;