Resume encryption migration immediately if the previous migration is incomplete.

chrome/browser/ui/webui/chromeos/login/encryption_migration_screen_handler.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_UI_WEBUI_CHROMEOS_LOGIN_ENCRYPTION_MIGRATION_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENCRYPTION_MIGRATION_SCREEN_HANDLER_H_
 
 #include "base/macros.h"
 #include "chrome/browser/chromeos/login/screens/encryption_migration_screen_view.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
 #include "chromeos/login/auth/user_context.h"
 #include "third_party/cros_system_api/dbus/cryptohome/dbus-constants.h"
 
 namespace chromeos {
 
 // WebUI implementation of EncryptionMigrationScreenView
 class EncryptionMigrationScreenHandler : public EncryptionMigrationScreenView,
                                          public BaseScreenHandler {
  public:
   EncryptionMigrationScreenHandler();
   ~EncryptionMigrationScreenHandler() override;
 
   // EncryptionMigrationScreenView implementation:
   void Show() override;
   void Hide() override;
   void SetDelegate(Delegate* delegate) override;
   void SetUserContext(const UserContext& user_context) override;
+  void SetShouldResume(bool should_resume) override;
   void SetContinueLoginCallback(ContinueLoginCallback callback) override;
 
   // BaseScreenHandler implementation:
   void DeclareLocalizedValues(
       ::login::LocalizedValuesBuilder* builder) override;
   void Initialize() override;
 
  private:
   // Enumeration for the migration state. These values must be kept in sync with
   // EncryptionMigrationUIState in JS code.
@@ skipping 38 matching lines @@
   ContinueLoginCallback continue_login_callback_;
 
   base::WeakPtrFactory<EncryptionMigrationScreenHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EncryptionMigrationScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_ENCRYPTION_MIGRATION_SCREEN_HANDLER_H_