Run OAuth token handle check upon user pod selction.

chrome/browser/chromeos/login/ui/login_display_host_impl.cc

Index: chrome/browser/chromeos/login/ui/login_display_host_impl.cc
diff --git a/chrome/browser/chromeos/login/ui/login_display_host_impl.cc b/chrome/browser/chromeos/login/ui/login_display_host_impl.cc
index 64851a03c4933fb8f51f9ab6557b8a47acb0fa4e..12bba58890e169ab08b103b67dfb0136fec9d379 100644
--- a/chrome/browser/chromeos/login/ui/login_display_host_impl.cc
+++ b/chrome/browser/chromeos/login/ui/login_display_host_impl.cc
@@ -630,22 +630,6 @@ void LoginDisplayHostImpl::StartSignInScreen(
   SetStatusAreaVisible(true);
   existing_user_controller_->Init(users);
 
-  // Validate user OAuth tokens.
-
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableOAuthTokenHandlers)) {
-    token_handle_util_.reset(
-        new TokenHandleUtil(user_manager::UserManager::Get()));
-    for (auto* user : users) {
-      auto user_id = user->GetUserID();
-      if (token_handle_util_->HasToken(user_id)) {
-        token_handle_util_->CheckToken(
-            user_id, base::Bind(&LoginDisplayHostImpl::OnTokenHandlerChecked,
-                                pointer_factory_.GetWeakPtr()));
-      }
-    }
-  }
-
   // We might be here after a reboot that was triggered after OOBE was complete,
   // so check for auto-enrollment again. This might catch a cached decision from
   // a previous oobe flow, or might start a new check with the server.
@@ -672,16 +656,6 @@ void LoginDisplayHostImpl::StartSignInScreen(
       "login-wait-for-signin-state-initialize");
 }
 
-void LoginDisplayHostImpl::OnTokenHandlerChecked(
-    const user_manager::UserID& user_id,
-    TokenHandleUtil::TokenHandleStatus token_status) {
-  if (token_status == TokenHandleUtil::INVALID) {
-    user_manager::UserManager::Get()->SaveUserOAuthStatus(
-        user_id, user_manager::User::OAUTH2_TOKEN_STATUS_INVALID);
-    token_handle_util_->DeleteToken(user_id);
-  }
-}
-
 void LoginDisplayHostImpl::OnPreferencesChanged() {
   if (is_showing_login_)
     webui_login_display_->OnPreferencesChanged();