Run OAuth token handle check upon user pod selction.

chrome/browser/chromeos/login/screens/user_selection_screen.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/screens/user_selection_screen.h"
 
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "base/values.h"
@@ skipping 95 matching lines @@
   user_dict->Set(kKeyInitialKeyboardLayout,
                  GetCurrentKeyboardLayout().release());
 }
 
 }  // namespace
 
 UserSelectionScreen::UserSelectionScreen(const std::string& display_type)
     : handler_(nullptr),
       login_display_delegate_(nullptr),
       view_(nullptr),
-      display_type_(display_type) {
+      display_type_(display_type),
+      weak_factory_(this) {
 }
 
 UserSelectionScreen::~UserSelectionScreen() {
   ScreenlockBridge::Get()->SetLockHandler(nullptr);
   ui::UserActivityDetector* activity_detector = ui::UserActivityDetector::Get();
   if (activity_detector->HasObserver(this))
     activity_detector->RemoveObserver(this);
 }
 
 void UserSelectionScreen::InitEasyUnlock() {
@@ skipping 269 matching lines @@
     users_list.Append(user_dict);
   }
 
   handler_->LoadUsers(users_list, show_guest_);
 }
 
 void UserSelectionScreen::HandleGetUsers() {
   SendUserList();
 }
 
+void UserSelectionScreen::CheckUserStatus(const std::string& user_id) {
+  // No checks on lock screen.
+  if (ScreenLocker::default_screen_locker())
+    return;
+
+  if (!token_handle_util_.get()) {
+    token_handle_util_.reset(
+        new TokenHandleUtil(user_manager::UserManager::Get()));
+  }
+
+  if (token_handle_util_->HasToken(user_id)) {
+    token_handle_util_->CheckToken(
+        user_id, base::Bind(&UserSelectionScreen::OnUserStatusChecked,
+                            weak_factory_.GetWeakPtr()));
+  }
+}
+
+void UserSelectionScreen::OnUserStatusChecked(
+    const user_manager::UserID& user_id,
+    TokenHandleUtil::TokenHandleStatus status) {
+  if (status == TokenHandleUtil::INVALID) {
+    user_manager::UserManager::Get()->SaveUserOAuthStatus(
+        user_id, user_manager::User::OAUTH2_TOKEN_STATUS_INVALID);
+    token_handle_util_->DeleteToken(user_id);
+    SetAuthType(user_id, ONLINE_SIGN_IN, base::string16());
+  }
+}
+
 // EasyUnlock stuff
 
 void UserSelectionScreen::SetAuthType(const std::string& user_id,
                                       AuthType auth_type,
                                       const base::string16& initial_value) {
   if (GetAuthType(user_id) == FORCE_OFFLINE_PASSWORD)
     return;
   DCHECK(GetAuthType(user_id) != FORCE_OFFLINE_PASSWORD ||
          auth_type == FORCE_OFFLINE_PASSWORD);
   user_auth_type_map_[user_id] = auth_type;
@@ skipping 104 matching lines @@
   // The user profile should exist if and only if this is the lock screen.
   DCHECK_EQ(!!profile, GetScreenType() == LOCK_SCREEN);
 
   if (!profile)
     profile = profile_helper->GetSigninProfile();
 
   return EasyUnlockService::Get(profile);
 }
 
 }  // namespace chromeos