For actions, switch bool success into an exit code.

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>
@@ skipping 32 matching lines @@
                       new_version_("0.0.0.0"),
                       new_size_(0) {
     last_notify_time_.tv_sec = 0;
     last_notify_time_.tv_nsec = 0;
     if (utils::FileExists(kUpdateCompletedMarker))
       status_ = UPDATE_STATUS_UPDATED_NEED_REBOOT;
   }
   void Update();
 
   // ActionProcessorDelegate methods:
-  void ProcessingDone(const ActionProcessor* processor, bool success);
+  void ProcessingDone(const ActionProcessor* processor, ActionExitCode code);
   void ProcessingStopped(const ActionProcessor* processor);
   void ActionCompleted(ActionProcessor* processor,
                        AbstractAction* action,
-                       bool success);
+                       ActionExitCode code);
 
   // Stop updating. An attempt will be made to record status to the disk
   // so that updates can be resumed later.
   void Terminate();
 
   // Try to resume from a previously Terminate()d update.
   void ResumeUpdating();
 
   // Returns the current status in the out params. Returns true on success.
   bool GetStatus(int64_t* last_checked_time,
@@ skipping 37 matching lines @@
 
   // 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__