user_manager: Remove deps on session_manager

chrome/browser/chromeos/login/session/user_session_manager.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/chromeos/login/session/user_session_manager.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <string>
@@ skipping 1727 matching lines @@
         new QuickUnlockNotificationController(profile);
     quick_unlock_notification_handler_.insert(
         std::make_pair(profile, qu_feature_notification_controller));
   }
 
   // Mark login host for deletion after browser starts.  This
   // guarantees that the message loop will be referenced by the
   // browser before it is dereferenced by the login host.
   if (login_host)
     login_host->Finalize();
-  user_manager::UserManager::Get()->SessionStarted();
+  g_browser_process->platform_part()->SessionManager()->SessionStarted();
   chromeos::BootTimesRecorder::Get()->LoginDone(
       user_manager::UserManager::Get()->IsCurrentUserNew());
 
   // Check to see if this profile should show EndOfLife Notification and show
   // the message accordingly.
   if (ShouldShowEolNotification(profile))
     CheckEolStatus(profile);
 }
 
 void UserSessionManager::RespectLocalePreferenceWrapper(
@@ skipping 124 matching lines @@
           ->browser_policy_connector_chromeos()
           ->IsEnterpriseManaged()) {
     return false;
   }
 
   // Do not show end of life notification if this is a guest session
   return !profile->IsGuestSession();
 }
 
 }  // namespace chromeos