Adding XMPP ping functionality to CLoudPrint. XMPP ping and timeout is controlled thorugh Service S…

chrome/common/pref_names.cc

 // 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.
 
 #include "chrome/common/pref_names.h"
 
 #include "base/basictypes.h"
 
 namespace prefs {
 
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 // Settings specific to underlying print system.
 const char kCloudPrintPrintSystemSettings[] =
     "cloud_print.print_system_settings";
 // A boolean indicating whether we should poll for print jobs when don't have
 // an XMPP connection (false by default).
 const char kCloudPrintEnableJobPoll[] = "cloud_print.enable_job_poll";
 const char kCloudPrintRobotRefreshToken[] = "cloud_print.robot_refresh_token";
 const char kCloudPrintRobotEmail[] = "cloud_print.robot_email";
 // A boolean indicating whether we should connect to cloud print new printers.
 const char kCloudPrintConnectNewPrinters[] = "cloud_print.connect_new_printers";
+// A boolean indicating whether we should ping XMPP connection.
+const char kCloudPrintXmppPingEnabled[] = "cloud_print.xmpp_ping_enabled";
+// An int value indicating the average timeout between xmpp pings.
+const char kCloudPrintXmppPingTimeout[] = "cloud_print.xmpp_ping_timeout_sec";
 // List of printers which should not be connected.
 const char kCloudPrintPrinterBlacklist[] = "cloud_print.printer_blacklist";
 // A boolean indicating whether submitting jobs to Google Cloud Print is
 // blocked by policy.
 const char kCloudPrintSubmitEnabled[] = "cloud_print.submit_enabled";
 
 // Preference to store proxy settings.
 const char kProxy[] = "proxy";
 const char kMaxConnectionsPerProxy[] = "net.max_connections_per_proxy";
 
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 // Tracks the time of the last shown warning. Used to reset
 // |network_profile.warnings_left| after a silence period.
 const char kNetworkProfileLastWarningTime[] =
     "network_profile.last_warning_time";
 
 // 64-bit serialization of the time last policy usage statistics were collected
 // by UMA_HISTOGRAM_ENUMERATION.
 const char kLastPolicyStatisticsUpdate[] = "policy.last_statistics_update";
 
 }  // namespace prefs