ChromeOS: enable SystemTimezoneAutomaticDetectionPolicy by default.

chrome/browser/chromeos/system/timezone_resolver_manager.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/chromeos/system/timezone_resolver_manager.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/policy/proto/chrome_device_policy.pb.h"
@@ skipping 13 matching lines @@
 enum ServiceConfiguration {
   UNSPECIFIED = 0,   // Try another configuration source.
   SHOULD_START = 1,  // This source requires service Start.
   SHOULD_STOP = 2,   // This source requires service Stop.
 };
 
 // Starts or stops TimezoneResolver if required by
 // SystemTimezoneAutomaticDetectionPolicy.
 // Returns SHOULD_* if timezone resolver status is controlled by this policy.
 ServiceConfiguration GetServiceConfigurationFromAutomaticDetectionPolicy() {
-  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
-          chromeos::switches::kEnableSystemTimezoneAutomaticDetectionPolicy)) {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          chromeos::switches::kDisableSystemTimezoneAutomaticDetectionPolicy)) {
     return UNSPECIFIED;
   }
 
   PrefService* local_state = g_browser_process->local_state();
   const bool is_managed = local_state->IsManagedPreference(
       prefs::kSystemTimezoneAutomaticDetectionPolicy);
   if (!is_managed)
     return UNSPECIFIED;
 
   int policy_value =
@@ skipping 126 matching lines @@
     } else {
       // We are on a signin page.
       result = GetServiceConfigurationForSigninScreen();
     }
   }
   return result == SHOULD_START;
 }
 
 }  // namespace system
 }  // namespace chromeos