Revert of Move some sync/notifier to components/invalidation

components/invalidation/notifier_reason_util.h

Index: components/invalidation/notifier_reason_util.h
diff --git a/components/invalidation/notifier_reason_util.h b/components/invalidation/notifier_reason_util.h
deleted file mode 100644
index 530cbb8f1f7a594dedbaa494cb37695cce8ed0a0..0000000000000000000000000000000000000000
--- a/components/invalidation/notifier_reason_util.h
+++ /dev/null
@@ -1,22 +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.
-
-#ifndef COMPONENTS_INVALIDATION_NOTIFIER_REASON_UTIL_H_
-#define COMPONENTS_INVALIDATION_NOTIFIER_REASON_UTIL_H_
-
-#include "jingle/notifier/listener/push_client_observer.h"
-#include "sync/internal_api/public/base/invalidator_state.h"
-
-namespace syncer {
-
-InvalidatorState FromNotifierReason(
-    notifier::NotificationsDisabledReason reason);
-
-// Should not be called when |state| == INVALIDATIONS_ENABLED.
-notifier::NotificationsDisabledReason
-    ToNotifierReasonForTest(InvalidatorState state);
-
-}  // namespace syncer
-
-#endif  // COMPONENTS_INVALIDATION_NOTIFIER_REASON_UTIL_H_