Gets rid of the LocationArbitrator interface, in preference for LocationProvider.

device/geolocation/location_provider_base.cc

 // Copyright (c) 2013 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 "device/geolocation/location_provider_base.h"
 
 namespace device {
 
 LocationProviderBase::LocationProviderBase() {}
 
 LocationProviderBase::~LocationProviderBase() {}
 
 void LocationProviderBase::NotifyCallback(const Geoposition& position) {
   if (!callback_.is_null())
     callback_.Run(this, position);
 }
 
 void LocationProviderBase::SetUpdateCallback(
     const LocationProviderUpdateCallback& callback) {
   callback_ = callback;
 }
 
-void LocationProviderBase::RequestRefresh() {}
-
 }  // namespace device