ProfileManager doesn't depend on "--login-profile" switch.

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 <string>
 
 #include "base/base_paths.h"
 #include "base/bind.h"
@@ skipping 586 matching lines @@
   btl->AddLoginTimeMarker("UserLoggedIn-End", false);
 }
 
 void UserSessionManager::PrepareProfile() {
   bool is_demo_session =
       DemoAppLauncher::IsDemoAppSession(user_context_.GetUserID());
 
   // TODO(nkostylev): Figure out whether demo session is using the right profile
   // path or not. See https://codereview.chromium.org/171423009
   g_browser_process->profile_manager()->CreateProfileAsync(
-      ProfileHelper::GetUserProfileDirByUserId(user_context_.GetUserID()),
+      ProfileHelper::GetProfilePathByUserIdHash(user_context_.GetUserIDHash()),
       base::Bind(&UserSessionManager::OnProfileCreated,
                  AsWeakPtr(),
                  user_context_,
                  is_demo_session),
       base::string16(),
       base::string16(),
       std::string());
 }
 
 void UserSessionManager::OnProfileCreated(const UserContext& user_context,
@@ skipping 381 matching lines @@
       default_ime_states_[profile];
   if (!state) {
     // Profile can be NULL in tests.
     state = input_method::InputMethodManager::Get()->CreateNewState(profile);
     default_ime_states_[profile] = state;
   }
   return state;
 }
 
 }  // namespace chromeos