ChromeOS: removed outdated --disable-timezone-tracking-option switch.

chrome/browser/ui/webui/settings/chromeos/date_time_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/settings/chromeos/date_time_handler.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/policy/proto/chrome_device_policy.pb.h"
 #include "chrome/browser/chromeos/system/timezone_util.h"
@@ skipping 42 matching lines @@
 
   bool system_time_zone_automatic_detection_managed =
       IsSystemTimezoneAutomaticDetectionManaged();
   html_source->AddBoolean("systemTimeZoneDetectionManaged",
       system_time_zone_automatic_detection_managed);
   if (system_time_zone_automatic_detection_managed) {
     html_source->AddInteger("systemTimeZoneDetectionPolicyValue",
         GetSystemTimezoneAutomaticDetectionPolicyValue());
   }
 
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          chromeos::switches::kDisableTimeZoneTrackingOption)) {
-    html_source->AddBoolean("hideTimeZoneDetection", true);
-  }
-
   return new DateTimeHandler;
 }
 
 void DateTimeHandler::RegisterMessages() {
   // TODO(michaelpg): Add time zone message handlers.
 }
 
 void DateTimeHandler::OnJavascriptAllowed() {
   // TODO(michaelpg): Add policy observers.
 }
 
 void DateTimeHandler::OnJavascriptDisallowed() {
   // TODO(michaelpg): Remove policy observers.
 }
 
 }  // namespace settings
 }  // namespace chromeos