Switch from SignedSettings to DeviceSettingsService.

chrome/browser/chromeos/settings/device_settings_migration_helper.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.

[pastarmovj, 2012/08/03 13:35:58]

Shouldn't this file be A+? Maybe it has diverged too much to be detected. Could
you preserve the history by making the rename change in a separate CL first? If
you think this history is worth preserving.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_MIGRATION_HELPER_H_
+#define CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_MIGRATION_HELPER_H_
+
+#include "base/memory/weak_ptr.h"
+#include "chrome/browser/chromeos/settings/device_settings_service.h"
+#include "chrome/browser/prefs/pref_value_map.h"
+
+namespace base {
+class Value;
+}
+
+namespace chromeos {
+
+// This class provides the means to migrate settings to the signed settings
+// store. It does one of three things - store the settings in the policy blob
+// immediately if the current user is the owner. Uses the DeviceSettingsCache if
+// there is no owner yet, or waits for an call from DeviceSettingsProvider to
+// delay the storing until the owner has logged in.
+class DeviceSettingsMigrationHelper {
+ public:
+  DeviceSettingsMigrationHelper();
+  virtual ~DeviceSettingsMigrationHelper();
+
+  // Adds a value to be migrated. The class takes ownership of the |value|.
+  void AddMigrationValue(const std::string& path, base::Value* value);
+
+  // Initiates values migration. If the device is already owned this will
+  // happen immediately if not it will wait for ownership login and finish the
+  // migration then.
+  void MigrateValues(void);
+
+ private:
+  // Does the actual migration when ownership has been confirmed.
+  void DoMigrateValues(DeviceSettingsService::OwnershipStatus status,
+                       bool current_user_is_owner);
+
+  base::WeakPtrFactory<DeviceSettingsMigrationHelper> ptr_factory_;
+  PrefValueMap migration_values_;
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceSettingsMigrationHelper);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_MIGRATION_HELPER_H_