Don't allow restarting to apply custom flags when supervised user creation flow is active

chrome/browser/chromeos/login/user_flow.h

 // Copyright (c) 2012 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_CHROMEOS_LOGIN_USER_FLOW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USER_FLOW_H_
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chromeos/login/auth/auth_status_consumer.h"
 #include "components/user_manager/user.h"
 
 namespace chromeos {
 
 class UserContext;
 
 class LoginDisplayHost;
 // Defines possible variants of user flow upon logging in.
 // See UserManager::SetUserFlow for usage contract.
 class UserFlow {
  public:
   UserFlow();
   virtual ~UserFlow() = 0;
   // Indicates if screen locking should be enabled or disabled for a flow.
   virtual bool CanLockScreen() = 0;
   virtual bool ShouldShowSettings() = 0;
   virtual bool ShouldLaunchBrowser() = 0;
   virtual bool ShouldSkipPostLoginScreens() = 0;
+  virtual bool SupportsEarlyRestartToApplyFlags() = 0;
   virtual bool HandleLoginFailure(const AuthFailure& failure) = 0;
   virtual void HandleLoginSuccess(const UserContext& context) = 0;
   virtual bool HandlePasswordChangeDetected() = 0;
   virtual void HandleOAuthTokenStatusChange(
       user_manager::User::OAuthTokenStatus status) = 0;
   virtual void LaunchExtraSteps(Profile* profile) = 0;
 
   void set_host(LoginDisplayHost* host) {
     host_ = host;
   }
 
   LoginDisplayHost* host() {
     return host_;
   }
 
  private:
   LoginDisplayHost* host_;
 };
 
 // UserFlow implementation for regular login flow.
 class DefaultUserFlow : public UserFlow {
  public:
   virtual ~DefaultUserFlow();
 
   virtual bool CanLockScreen() override;
   virtual bool ShouldShowSettings() override;
   virtual bool ShouldLaunchBrowser() override;
   virtual bool ShouldSkipPostLoginScreens() override;
+  virtual bool SupportsEarlyRestartToApplyFlags() override;
   virtual bool HandleLoginFailure(const AuthFailure& failure) override;
   virtual void HandleLoginSuccess(const UserContext& context) override;
   virtual bool HandlePasswordChangeDetected() override;
   virtual void HandleOAuthTokenStatusChange(
       user_manager::User::OAuthTokenStatus status) override;
   virtual void LaunchExtraSteps(Profile* profile) override;
 };
 
 // UserFlow stub for non-regular flows.
 class ExtendedUserFlow : public UserFlow {
@@ skipping 10 matching lines @@
     return user_id_;
   }
 
  private:
   std::string user_id_;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USER_FLOW_H_