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

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

Index: chrome/browser/chromeos/login/session/user_session_manager.cc
diff --git a/chrome/browser/chromeos/login/session/user_session_manager.cc b/chrome/browser/chromeos/login/session/user_session_manager.cc
index d9eb16dcc745e6b92dbd5fa9ba1726ca8d66a02b..f53d26d88708d4af512a920d7130d2ad188c7f4e 100644
--- a/chrome/browser/chromeos/login/session/user_session_manager.cc
+++ b/chrome/browser/chromeos/login/session/user_session_manager.cc
@@ -599,7 +599,7 @@ void UserSessionManager::PrepareProfile() {
   // 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_,