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
new file mode 100644
index 0000000000000000000000000000000000000000..530cbb8f1f7a594dedbaa494cb37695cce8ed0a0
--- /dev/null
+++ b/components/invalidation/notifier_reason_util.h
@@ -0,0 +1,22 @@
+// 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_