cros: Show dircryto migration banner

chromeos/dbus/cryptohome_client.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 CHROMEOS_DBUS_CRYPTOHOME_CLIENT_H_
 #define CHROMEOS_DBUS_CRYPTOHOME_CLIENT_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 576 matching lines @@
       const ProtobufMethodCallback& callback) = 0;
 
   // Asynchronously calls SetFirmwareManagementParameters method. |callback|
   // is called after method call, and with reply protobuf. |request| contains
   // the flags to be set. SetFirmwareManagementParameters creates the firmware
   // management parameters in TPM and sets flags included in the request.
   virtual void SetFirmwareManagementParametersInTpm(
       const cryptohome::SetFirmwareManagementParametersRequest& request,
       const ProtobufMethodCallback& callback) = 0;
 
+  // Calls NeedsDircryptoMigration to find out whether the given user needs
+  // dircrypto migration.
+  virtual void NeedsDircryptoMigration(
+      const cryptohome::Identification& cryptohome_id,
+      const BoolDBusMethodCallback& callback) = 0;
+
  protected:
   // Create() should be used instead.
   CryptohomeClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CryptohomeClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_CRYPTOHOME_CLIENT_H_