Add support to update_engine to poke Omaha after an update has been applied

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>
@@ skipping 105 matching lines @@
  private:
   friend class UpdateAttempterTest;
   FRIEND_TEST(UpdateAttempterTest, ActionCompletedDownloadTest);
   FRIEND_TEST(UpdateAttempterTest, ActionCompletedErrorTest);
   FRIEND_TEST(UpdateAttempterTest, ActionCompletedOmahaRequestTest);
   FRIEND_TEST(UpdateAttempterTest, DisableDeltaUpdateIfNeededTest);
   FRIEND_TEST(UpdateAttempterTest, MarkDeltaUpdateFailureTest);
   FRIEND_TEST(UpdateAttempterTest, ScheduleErrorEventActionNoEventTest);
   FRIEND_TEST(UpdateAttempterTest, ScheduleErrorEventActionTest);
   FRIEND_TEST(UpdateAttempterTest, UpdateTest);
+  FRIEND_TEST(UpdateAttempterTest, PingOmahaTest);
 
   // Sets the status to the given status and notifies a status update
   // over dbus.
   void SetStatusAndNotify(UpdateStatus status);
 
   // Sets up the download parameters after receiving the update check response.
   void SetupDownload();
 
   // Creates an error event object in |error_event_| to be included in an
   // OmahaRequestAction once the current action processor is done.
@@ skipping 32 matching lines @@
   // If this was a delta update attempt that failed, count it so that a full
   // update can be tried when needed.
   void MarkDeltaUpdateFailure();
 
   ProxyResolver* GetProxyResolver() {
     return obeying_proxies_ ?
         reinterpret_cast<ProxyResolver*>(&chrome_proxy_resolver_) :
         reinterpret_cast<ProxyResolver*>(&direct_proxy_resolver_);
   }
 
+  // Sends a ping to Omaha.
+  // This is used after an update has been applied and we're waiting for the
+  // user to reboot.  This ping helps keep the number of actives count
+  // accurate in case a user takes a long time to reboot the device after an
+  // update has been applied.
+  void PingOmaha();
+
   // Last status notification timestamp used for throttling. Use monotonic
   // TimeTicks to ensure that notifications are sent even if the system clock is
   // set back in the middle of an update.
   base::TimeTicks last_notify_time_;
 
   std::vector<std::tr1::shared_ptr<AbstractAction> > actions_;
   scoped_ptr<ActionProcessor> processor_;
 
   // If non-null, this UpdateAttempter will send status updates over this
   // dbus service.
@@ skipping 51 matching lines @@
   // Our two proxy resolvers
   DirectProxyResolver direct_proxy_resolver_;
   ChromeBrowserProxyResolver chrome_proxy_resolver_;
 
   DISALLOW_COPY_AND_ASSIGN(UpdateAttempter);
 };
 
 }  // namespace chromeos_update_engine
 
 #endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_ATTEMPTER_H__