cros: Remove incorrect DCHECK in lock screen.

It is possible for the PIN to timeout while on the lock screen.

Bug: 855629
Change-Id: Ib23cebdec84bb4713b7fcb78c2f72d6877d6d859
Reviewed-on: https://chromium-review.googlesource.com/1112207
Commit-Queue: Alexander Alekseev <alemate@chromium.org>
Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569899}

chrome/browser/chromeos/login/lock/views_screen_locker.cc

@@ -21,7 +21,6 @@
 #include "chrome/browser/chromeos/login/mojo_version_info_dispatcher.h"
 #include "chrome/browser/chromeos/login/quick_unlock/pin_backend.h"
 #include "chrome/browser/chromeos/login/quick_unlock/quick_unlock_factory.h"
-#include "chrome/browser/chromeos/login/quick_unlock/quick_unlock_storage.h"
 #include "chrome/browser/chromeos/login/screens/chrome_user_selection_screen.h"
 #include "chrome/browser/chromeos/login/user_board_view_mojo.h"
 #include "chrome/browser/chromeos/system/system_clock.h"
@@ -170,13 +169,6 @@ void ViewsScreenLocker::HandleAuthenticateUser(
     AuthenticateUserCallback callback) {
   DCHECK_EQ(account_id.GetUserEmail(),
             gaia::SanitizeEmail(account_id.GetUserEmail()));
-  quick_unlock::QuickUnlockStorage* quick_unlock_storage =
-      quick_unlock::QuickUnlockFactory::GetForAccountId(account_id);
-  // If pin storage is unavailable, |authenticated_by_pin| must be false.
-  DCHECK(!quick_unlock_storage ||
-         quick_unlock_storage->IsPinAuthenticationAvailable() ||
-         !authenticated_by_pin);
-
   const user_manager::User* const user =
       user_manager::UserManager::Get()->FindUser(account_id);
   DCHECK(user);