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

chrome/browser/ui/views/profiles/forced_reauthentication_dialog.h

Index: chrome/browser/ui/views/profiles/forced_reauthentication_dialog.h
diff --git a/chrome/browser/ui/views/profiles/forced_reauthentication_dialog.h b/chrome/browser/ui/views/profiles/forced_reauthentication_dialog.h
index 3e377d109120dac21467ac64cfb991ca5d8bca4a..44d47f5333eb55f12dfbdab93bed405e5144300d 100644
--- a/chrome/browser/ui/views/profiles/forced_reauthentication_dialog.h
+++ b/chrome/browser/ui/views/profiles/forced_reauthentication_dialog.h
@@ -10,6 +10,7 @@
 
 #include "base/callback.h"
 #include "base/macros.h"
+#include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/window/dialog_delegate.h"
@@ -32,7 +33,7 @@ class ForcedReauthenticationDialog : public views::DialogDelegateView {
   static ForcedReauthenticationDialog* ShowDialog(
       Profile* profile,
       SigninManager* signin_manager,
-      const base::TimeDelta& countdown_duration);
+      base::TimeDelta countdown_duration);
 
   // override views::DialogDelegateView
   bool Accept() override;
@@ -45,11 +46,18 @@ class ForcedReauthenticationDialog : public views::DialogDelegateView {
   // override views::View
   void AddedToWidget() override;
 
+  // Close the dialog
+  void CloseDialog();
+
+  base::WeakPtr<ForcedReauthenticationDialog> AsWeakPtr() {
+    return weak_factory_.GetWeakPtr();
+  }
+
  private:
   // Show the dialog for |browser|. The dialog will delete itself after closing.
   ForcedReauthenticationDialog(Browser* browser,
                                SigninManager* signin_manager,
-                               const base::TimeDelta& countdown_duration);
+                               base::TimeDelta countdown_duration);
 
   void OnCountDown();
   base::TimeDelta GetTimeRemaining() const;
@@ -63,6 +71,8 @@ class ForcedReauthenticationDialog : public views::DialogDelegateView {
   // remaining time.
   base::RepeatingTimer refresh_timer_;
 
+  base::WeakPtrFactory<ForcedReauthenticationDialog> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ForcedReauthenticationDialog);
 };