Geolocation request for Google Now

chrome/browser/ui/google_now/google_now_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_GOOGLE_NOW_GOOGLE_NOW_SERVICE_H_
 #define CHROME_BROWSER_UI_GOOGLE_NOW_GOOGLE_NOW_SERVICE_H_
 
 #include "base/timer.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 
@@ skipping 30 matching lines @@
   // Gets new cards from the server and shows them as notifications.
   void UpdateCards();
 
   // Schedules next cards update after the specified delay.
   void StartWaitingForNextUpdate(int64 delay_ms);
   void OnWaitingForNextUpdateEnds();
 
   // Starts obtaining location of the machine.
   void StartObtainingGeolocation();
   void OnLocationObtained(const content::Geoposition& position);
+  void OnLocationRequestTimeout();
 
-  // Starts downloading cards from the server.
+  // Starts downloading cards from the server. If the position's Validate() call
+  // returns false, this means that the position is not available.
   void StartServerRequest(const content::Geoposition& position);
   void OnServerRequestCompleted(net::URLRequest* request, int num_bytes);
 
   // Parses server response. Returns true if the parsing was successful.
   static bool ParseServerResponse(const net::URLRequest* request, int num_bytes,
                                   ServerResponse* server_response);
 
   // Shows Google Now cards as notifications.
   void ShowNotifications(const ServerResponse& server_response);
 
   // The profile.
   Profile* const profile_;
   // Timer to schedule next cards update.
   base::OneShotTimer<GoogleNowService> next_update_timer_;
+  // Timer to cancel geolocation requests that take too long.
+  base::OneShotTimer<GoogleNowService> geolocation_request_timer_;
+  // Weak factory for the geolocation request callback.
+  base::WeakPtrFactory<GoogleNowService> geolocation_request_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GoogleNowService);
 };
 
 #endif  // CHROME_BROWSER_UI_GOOGLE_NOW_GOOGLE_NOW_SERVICE_H_