ChromeOS: Add SystemTimezoneAutomaticDetection policy.

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/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/pref_font_webkit_names.h"
 
@@ skipping 1855 matching lines @@
 
 // Indicates that debugging features were requested from oobe screen.
 const char kDebuggingFeaturesRequested[] = "DebuggingFeaturesRequested";
 
 #if defined(OS_CHROMEOS)
 // This setting starts periodic timezone refresh when not in user session.
 // (user session is controlled by user profile preference
 // kResolveTimezoneByGeolocation
 const char kResolveDeviceTimezoneByGeolocation[] =
     "settings.resolve_device_timezone_by_geolocation";
+
+// This is policy-controlled preference.
+// It has values defined in policy enum
+// SystemTimezoneAutomaticDetectionProto_AutomaticTimezoneDetectionType;
+const char kSystemTimezoneAutomaticDetectionPolicy[] =
+    "settings.resolve_device_timezone_by_geolocation_policy";
 #endif  // defined(OS_CHROMEOS)
 
 // *************** SERVICE PREFS ***************
 // These are attached to the service process.
 
 const char kCloudPrintRoot[] = "cloud_print";
 const char kCloudPrintProxyEnabled[] = "cloud_print.enabled";
 // The unique id for this instance of the cloud print proxy.
 const char kCloudPrintProxyId[] = "cloud_print.proxy_id";
 // The GAIA auth token for Cloud Print
@@ skipping 305 matching lines @@
 const char kMediaRouterEnableCloudServices[] =
     "media_router.cloudservices.enabled";
 #endif  // defined(GOOGLE_CHROME_BUILD)
 // Whether or not the Media Router first run flow has been acknowledged by the
 // user.
 const char kMediaRouterFirstRunFlowAcknowledged[] =
     "media_router.firstrunflow.acknowledged";
 #endif
 
 }  // namespace prefs