Componentize chrome/browser/sync/backup_rollback_controller

chrome/browser/sync/backup_rollback_controller.cc

Index: chrome/browser/sync/backup_rollback_controller.cc
diff --git a/chrome/browser/sync/backup_rollback_controller.cc b/chrome/browser/sync/backup_rollback_controller.cc
deleted file mode 100644
index a80d703da669e7f1be0ee237e25518e63e56f700..0000000000000000000000000000000000000000
--- a/chrome/browser/sync/backup_rollback_controller.cc
+++ /dev/null
@@ -1,103 +0,0 @@
-// Copyright 2014 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.
-
-#include "chrome/browser/sync/backup_rollback_controller.h"
-
-#include "base/command_line.h"
-#include "base/location.h"
-#include "base/metrics/field_trial.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
-#include "chrome/common/chrome_switches.h"
-#include "components/sync_driver/signin_manager_wrapper.h"
-#include "components/sync_driver/sync_driver_switches.h"
-#include "components/sync_driver/sync_prefs.h"
-
-namespace browser_sync {
-
-#if defined(ENABLE_PRE_SYNC_BACKUP)
-// Number of rollback attempts to try before giving up.
-static const int kRollbackLimits = 3;
-
-// Finch experiment name and group.
-static char kSyncBackupFinchName[] = "SyncBackup";
-static char kSyncBackupFinchDisabled[] = "disabled";
-#endif
-
-BackupRollbackController::BackupRollbackController(
-    sync_driver::SyncPrefs* sync_prefs,
-    const SigninManagerWrapper* signin,
-    base::Closure start_backup,
-    base::Closure start_rollback)
-    : sync_prefs_(sync_prefs),
-      signin_(signin),
-      start_backup_(start_backup),
-      start_rollback_(start_rollback) {
-}
-
-BackupRollbackController::~BackupRollbackController() {
-}
-
-bool BackupRollbackController::StartBackup() {
-  if (!IsBackupEnabled())
-    return false;
-
-  // Disable rollback to previous backup DB because it will be overwritten by
-  // new backup.
-  sync_prefs_->SetRemainingRollbackTries(0);
-  base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, start_backup_);
-  return true;
-}
-
-bool BackupRollbackController::StartRollback() {
-  if (!IsBackupEnabled())
-    return false;
-
-  // Don't roll back if disabled or user is signed in.
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kSyncDisableRollback) ||
-      !signin_->GetEffectiveUsername().empty()) {
-    sync_prefs_->SetRemainingRollbackTries(0);
-    return false;
-  }
-
-  int rollback_tries = sync_prefs_->GetRemainingRollbackTries();
-  if (rollback_tries <= 0)
-    return false;   // No pending rollback.
-
-  sync_prefs_->SetRemainingRollbackTries(rollback_tries - 1);
-  base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, start_rollback_);
-  return true;
-}
-
-void BackupRollbackController::OnRollbackReceived() {
-#if defined(ENABLE_PRE_SYNC_BACKUP)
-  sync_prefs_->SetRemainingRollbackTries(kRollbackLimits);
-#endif
-}
-
-void BackupRollbackController::OnRollbackDone() {
-#if defined(ENABLE_PRE_SYNC_BACKUP)
-  sync_prefs_->SetRemainingRollbackTries(0);
-#endif
-}
-
-// static
-bool BackupRollbackController::IsBackupEnabled() {
-#if defined(ENABLE_PRE_SYNC_BACKUP)
-  const std::string group_name =
-      base::FieldTrialList::FindFullName(kSyncBackupFinchName);
-
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kSyncDisableBackup) ||
-      group_name == kSyncBackupFinchDisabled) {
-    return false;
-  }
-  return true;
-#else
-  return false;
-#endif
-}
-
-}  // namespace browser_sync