Cleanup: Remove unused variables in chrome/ found by Scythe.

chrome/service/cloud_print/printer_job_handler.h

Index: chrome/service/cloud_print/printer_job_handler.h
diff --git a/chrome/service/cloud_print/printer_job_handler.h b/chrome/service/cloud_print/printer_job_handler.h
index b5731d88b98fea1cfa972dfc10a081bde3d06747..304e2bc0af06ea0ca45adc5b986be5c598a7f8c1 100644
--- a/chrome/service/cloud_print/printer_job_handler.h
+++ b/chrome/service/cloud_print/printer_job_handler.h
@@ -268,8 +268,6 @@ class PrinterJobHandler : public base::RefCountedThreadSafe<PrinterJobHandler>,
   // DataHandler (depending on the current request being made).
   JSONDataHandler next_json_data_handler_;
   DataHandler next_data_handler_;
-  // The number of consecutive times that connecting to the server failed.
-  int server_error_count_;
   // The thread on which the actual print operation happens
   base::Thread print_thread_;
   // The Job spooler object. This is only non-NULL during a print operation.
@@ -290,9 +288,6 @@ class PrinterJobHandler : public base::RefCountedThreadSafe<PrinterJobHandler>,
   bool job_check_pending_;
   bool printer_update_pending_;
 
-  // Number of seconds between XMPP pings (for server registration)
-  int xmpp_ping_interval_;
-
   // Some task in the state machine is in progress.
   bool task_in_progress_;
   scoped_refptr<PrintSystem::PrinterWatcher> printer_watcher_;