Gets rid of LocationProviderBase.

device/geolocation/location_provider_android.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 "device/geolocation/location_provider_android.h"
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "base/time/time.h"
 #include "device/geolocation/geoposition.h"
 #include "device/geolocation/location_api_adapter_android.h"
 
 namespace device {
 
 // LocationProviderAndroid
 LocationProviderAndroid::LocationProviderAndroid() {}
 
 LocationProviderAndroid::~LocationProviderAndroid() {
   StopProvider();
 }
 
 void LocationProviderAndroid::NotifyNewGeoposition(
     const Geoposition& position) {
   last_position_ = position;
-  NotifyCallback(last_position_);
+  if (!callback_.is_null())
+    callback_.Run(this, position);
+}
+
+void LocationProviderAndroid::SetUpdateCallback(
+    const LocationProviderUpdateCallback& callback) {
+  callback_ = callback;
 }
 
 bool LocationProviderAndroid::StartProvider(bool high_accuracy) {
   return AndroidLocationApiAdapter::GetInstance()->Start(this, high_accuracy);
 }
 
 void LocationProviderAndroid::StopProvider() {
   AndroidLocationApiAdapter::GetInstance()->Stop();
 }
 
 const Geoposition& LocationProviderAndroid::GetPosition() {
   return last_position_;
 }
 
 void LocationProviderAndroid::OnPermissionGranted() {
   // Nothing to do here.
 }
 
 // static
 std::unique_ptr<LocationProvider> NewSystemLocationProvider() {
   return base::WrapUnique(new LocationProviderAndroid);
 }
 
 }  // namespace device