Run OAuth token handle check upon user pod selction.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
index be11c2a5b47cdd27a290aaa4b3025284126fc836..6d276f53707c4375235e786d284b13a51d4064fa 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
@@ -188,6 +188,9 @@ class SigninScreenHandlerDelegate {
   // Request to (re)load user list.
   virtual void HandleGetUsers() = 0;
 
+  // Runs an OAuth token validation check for user.
+  virtual void CheckUserStatus(const std::string& user_id) = 0;
+
  protected:
   virtual ~SigninScreenHandlerDelegate() {}
 };