[Sync] Move //components/sync_driver to //components/sync/driver.

components/sync_driver/sync_policy_handler.cc

-// Copyright 2013 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 "components/sync_driver/sync_policy_handler.h"
-
-#include "base/values.h"
-#include "components/policy/core/common/policy_map.h"
-#include "components/prefs/pref_value_map.h"
-#include "components/sync_driver/pref_names.h"
-#include "policy/policy_constants.h"
-
-namespace sync_driver {
-
-SyncPolicyHandler::SyncPolicyHandler()
-    : policy::TypeCheckingPolicyHandler(policy::key::kSyncDisabled,
-                                        base::Value::TYPE_BOOLEAN) {}
-
-SyncPolicyHandler::~SyncPolicyHandler() {
-}
-
-void SyncPolicyHandler::ApplyPolicySettings(const policy::PolicyMap& policies,
-                                            PrefValueMap* prefs) {
-  const base::Value* value = policies.GetValue(policy_name());
-  bool disable_sync;
-  if (value && value->GetAsBoolean(&disable_sync) && disable_sync)
-    prefs->SetValue(sync_driver::prefs::kSyncManaged, value->CreateDeepCopy());
-}
-
-}  // namespace sync_driver