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

components/sync_driver/sync_policy_handler.h

-// 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.
-
-#ifndef COMPONENTS_SYNC_DRIVER_SYNC_POLICY_HANDLER_H_
-#define COMPONENTS_SYNC_DRIVER_SYNC_POLICY_HANDLER_H_
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "components/policy/core/browser/configuration_policy_handler.h"
-
-class PrefValueMap;
-
-namespace sync_driver {
-
-class PolicyMap;
-
-// ConfigurationPolicyHandler for the SyncDisabled policy.
-class SyncPolicyHandler : public policy::TypeCheckingPolicyHandler {
- public:
-  SyncPolicyHandler();
-  ~SyncPolicyHandler() override;
-
-  // ConfigurationPolicyHandler methods:
-  void ApplyPolicySettings(const policy::PolicyMap& policies,
-                           PrefValueMap* prefs) override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(SyncPolicyHandler);
-};
-
-}  // namespace sync_driver
-
-#endif  // COMPONENTS_SYNC_DRIVER_SYNC_POLICY_HANDLER_H_