Send data back from service using IPC, not file.

cloud_print/service/win/service_controller.h

Index: cloud_print/service/win/service_controller.h
diff --git a/cloud_print/service/win/service_controller.h b/cloud_print/service/win/service_controller.h
index 4e0605993b61adad83877615464329f477e0e3b5..3b1cb3db25766a5c9fc022933cd960f6d3dd005b 100644
--- a/cloud_print/service/win/service_controller.h
+++ b/cloud_print/service/win/service_controller.h
@@ -1,5 +1,5 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
+// Copyright 2013 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 CLOUD_PRINT_SERVICE_SERVICE_CONTROLLER_H_
@@ -26,7 +26,8 @@ class ServiceController {
   HRESULT InstallService(const string16& user,
                          const string16& password,
                          const std::string& run_switch,
-                         const base::FilePath& user_data_dir);
+                         const base::FilePath& user_data_dir,
+                         bool auto_start);
 
   HRESULT UninstallService();