Add support for cellular geolocation

chromeos/geolocation/simple_geolocation_request.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_GEOLOCATION_SIMPLE_GEOLOCATION_REQUEST_H_
 #define CHROMEOS_GEOLOCATION_SIMPLE_GEOLOCATION_REQUEST_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 35 matching lines @@
   // The second argument indicates whether there was a server error or not.
   // It is true when there was a server or network error - either no response
   // or a 500 error code.
   typedef base::Callback<void(const Geoposition& /* position*/,
                               bool /* server_error */,
                               const base::TimeDelta elapsed)> ResponseCallback;
 
   // |url| is the server address to which the request wil be sent.
   // |timeout| retry request on error until timeout.
   // If wifi_data is not null, it will be sent to the geolocation server.
+  // If cell_tower_data is not null, it will be sent to the geolocation server.
   SimpleGeolocationRequest(net::URLRequestContextGetter* url_context_getter,
                            const GURL& service_url,
                            base::TimeDelta timeout,
-                           std::unique_ptr<WifiAccessPointVector> wifi_data);
+                           std::unique_ptr<WifiAccessPointVector> wifi_data,
+                           std::unique_ptr<CellTowerVector> cell_tower_data);
 
   ~SimpleGeolocationRequest() override;
 
   // Initiates request.
   // Note: if request object is destroyed before callback is called,
   // request will be silently cancelled.
   void MakeRequest(const ResponseCallback& callback);
 
   void set_retry_sleep_on_server_error_for_testing(
       const base::TimeDelta value) {
@@ skipping 56 matching lines @@
   // Stop request on timeout.
   base::OneShotTimer timeout_timer_;
 
   // Number of retry attempts.
   unsigned retries_;
 
   // This is updated on each retry.
   Geoposition position_;
 
   std::unique_ptr<WifiAccessPointVector> wifi_data_;
+  std::unique_ptr<CellTowerVector> cell_tower_data_;
 
   // Creation and destruction should happen on the same thread.
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(SimpleGeolocationRequest);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_GEOLOCATION_SIMPLE_GEOLOCATION_REQUEST_H_