Fix "unused variable" warnings.

chromeos/timezone/timezone_resolver.h

 // Copyright 2014 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.
 
 #ifndef CHROMEOS_TIMEZONE_TIMEZONE_RESOLVER_H_
 #define CHROMEOS_TIMEZONE_TIMEZONE_RESOLVER_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 81 matching lines @@
 
   scoped_refptr<net::URLRequestContextGetter> context_;
   const GURL url_;
 
   const ApplyTimeZoneCallback apply_timezone_;
   const DelayNetworkCallClosure delay_network_call_;
   PrefService* local_state_;
 
   std::unique_ptr<TimeZoneResolverImpl> implementation_;
 
-  bool send_wifi_data_to_geolocation_api_;
-
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(TimeZoneResolver);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_TIMEZONE_TIMEZONE_RESOLVER_H_