AU: Implement server-dictated poll interval.

update_attempter.h

 // Copyright (c) 2010 The Chromium OS 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_PLATFORM_UPDATE_ENGINE_UPDATE_ATTEMPTER_H__
 #define CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_ATTEMPTER_H__
 
 #include <time.h>
 
 #include <tr1/memory>
 #include <string>
 #include <vector>
 
+#include <base/time.h>
 #include <glib.h>
 #include <gtest/gtest_prod.h>  // for FRIEND_TEST
 
-#include "base/time.h"
 #include "update_engine/action_processor.h"
 #include "update_engine/download_action.h"
 #include "update_engine/omaha_request_params.h"
 #include "update_engine/omaha_response_handler_action.h"
 
 class MetricsLibraryInterface;
 struct UpdateEngineService;
 
 namespace chromeos_update_engine {
 
@@ skipping 134 matching lines @@
 
   // Pointer to the UMA metrics collection library.
   MetricsLibraryInterface* metrics_lib_;
 
   // The current UpdateCheckScheduler to notify of state transitions.
   UpdateCheckScheduler* update_check_scheduler_;
 
   // Pending error event, if any.
   scoped_ptr<OmahaEvent> error_event_;
 
+  // HTTP server response code from the last HTTP request action.
   int http_response_code_;
 
   // Current process priority.
   utils::ProcessPriority priority_;
 
   // The process priority management timeout source.
   GSource* manage_priority_source_;
 
   // Set to true if an update download is active (and BytesReceived
   // will be called), set to false otherwise.
   bool download_active_;
 
   // For status:
   UpdateStatus status_;
   double download_progress_;
   int64_t last_checked_time_;
   std::string new_version_;
   int64_t new_size_;
 
   // Device paramaters common to all Omaha requests.
   OmahaRequestDeviceParams omaha_request_params_;
 
   DISALLOW_COPY_AND_ASSIGN(UpdateAttempter);
 };
 
 }  // namespace chromeos_update_engine
 
 #endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_ATTEMPTER_H__