login_manager: Add dbus API for restarting entd when enterprise extensions installed

session_manager_service.h

 // Copyright (c) 2009-2010 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 LOGIN_MANAGER_SESSION_MANAGER_SERVICE_H_
 #define LOGIN_MANAGER_SESSION_MANAGER_SERVICE_H_
 
 #include <gtest/gtest.h>
 
 #include <errno.h>
@@ skipping 252 matching lines @@
   // unlock mode, and emit UnlockScreen signal to Chromium Browser.
   gboolean UnlockScreen(GError** error);
 
   // Restarts job with specified pid replacing its command line arguments
   // with provided.
   gboolean RestartJob(gint pid,
                       gchar* arguments,
                       gboolean* OUT_done,
                       GError** error);
 
+  // Restarts (or starts if stopped) the entd upstart job.  Returns if
+  // start was successful.
+  gboolean RestartEntd(GError** error);
+
   // Perform very, very basic validation of |email_address|.
   static bool ValidateEmail(const std::string& email_address);
 
   // Breaks |args| into separate arg lists, delimited by "--".
   // No initial "--" is needed, but is allowed.
   // ("a", "b", "c") => ("a", "b", "c")
   // ("a", "b", "c", "--", "d", "e", "f") =>
   //     ("a", "b", "c"), ("d", "e", "f").
   // Converts args from wide to plain strings.
   static std::vector<std::vector<std::string> > GetArgLists(
@@ skipping 134 matching lines @@
   bool set_uid_;
 
   bool shutting_down_;
 
   friend class TestAPI;
   DISALLOW_COPY_AND_ASSIGN(SessionManagerService);
 };
 }  // namespace login_manager
 
 #endif  // LOGIN_MANAGER_SESSION_MANAGER_SERVICE_H_