After signin token check failed, show force reauth dialog and start window closing countdown.

chrome/browser/signin/force_signin_verifier.h

 // Copyright 2017 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.
 
 #ifndef CHROME_BROWSER_SIGNIN_FORCE_SIGNIN_VERIFIER_H_
 #define CHROME_BROWSER_SIGNIN_FORCE_SIGNIN_VERIFIER_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 #include "net/base/backoff_entry.h"
 #include "net/base/network_change_notifier.h"
 
+namespace views {
+class Widget;
+class WidgetDeletionObserver;
+}  // namespace views
+
 class Profile;
 class SigninManager;
 
 // ForceSigninVerifier will verify profile's auth token when profile is loaded
 // into memory by the first time via gaia server. It will retry on any transient
 // error.
 class ForceSigninVerifier
     : public OAuth2TokenService::Consumer,
       public net::NetworkChangeNotifier::NetworkChangeObserver {
  public:
   explicit ForceSigninVerifier(Profile* profile);
   ~ForceSigninVerifier() override;
 
-  // OAuth2TokenService::Consumer implementation
+  // override OAuth2TokenService::Consumer
   void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
                          const std::string& access_token,
                          const base::Time& expiration_time) override;
   void OnGetTokenFailure(const OAuth2TokenService::Request* request,
                          const GoogleServiceAuthError& error) override;
 
-  // net::NetworkChangeNotifier::NetworkChangeObserver
+  // override net::NetworkChangeNotifier::NetworkChangeObserver
   void OnNetworkChanged(
       net::NetworkChangeNotifier::ConnectionType type) override;
 
   // Cancel any pending or ongoing verification.
   void Cancel();
 
   // Return the value of |has_token_verified_|.
   bool HasTokenBeenVerified();
 
+  // Abort signout countdown.
+  void AbortSignoutCountdownIfExisted();
+
  protected:
   // Send the token verification request. The request will be sent only if
   //   - The token has never been verified before.
   //   - There is no on going verification.
   //   - There is network connection.
   //   - The profile has signed in.
   //
   void SendRequest();
 
   virtual bool ShouldSendRequest();
 
   // Show the warning dialog before signing out user and closing assoicated
   // browser window.
   virtual void ShowDialog();
 
+  // Start the window closing countdown, return the duration.
+  base::TimeDelta StartCountdown();
+
   OAuth2TokenService::Request* GetRequestForTesting();
   net::BackoffEntry* GetBackoffEntryForTesting();
   base::OneShotTimer* GetOneShotTimerForTesting();
+  base::OneShotTimer* GetWindowCloseTimerForTesting();
 
  private:
+  void CloseAllBrowserWindows();
+
   std::unique_ptr<OAuth2TokenService::Request> access_token_request_;
 
+#if !defined(OS_MACOSX)
+  Profile* profile_;
+#endif
   // Indicates whether the verification is finished successfully or with a
   // persistent error.
   bool has_token_verified_;
   net::BackoffEntry backoff_entry_;
   base::OneShotTimer backoff_request_timer_;
 
   OAuth2TokenService* oauth2_token_service_;
   SigninManager* signin_manager_;
 
   base::Time token_request_time_;
 
+  // The countdown of window closing and its warning dialog.
+  base::OneShotTimer window_close_timer_;
+  views::Widget* reauth_dialog_;
+  std::unique_ptr<views::WidgetDeletionObserver> dialog_observer_;
+
   DISALLOW_COPY_AND_ASSIGN(ForceSigninVerifier);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_FORCE_SIGNIN_VERIFIER_H_