[Sync] Move events files around a bit.

components/sync/engine_impl/events/get_updates_response_event.h

Index: components/sync/engine_impl/events/get_updates_response_event.h
diff --git a/components/sync/engine/events/get_updates_response_event.h b/components/sync/engine_impl/events/get_updates_response_event.h
similarity index 86%
rename from components/sync/engine/events/get_updates_response_event.h
rename to components/sync/engine_impl/events/get_updates_response_event.h
index 9534aeaee4c98fa4a5e3319c6dc99ccf1414b3a2..2a42e36ef295207b75f2404d51bb0907cf6cd8ad 100644
--- a/components/sync/engine/events/get_updates_response_event.h
+++ b/components/sync/engine_impl/events/get_updates_response_event.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_SYNC_ENGINE_EVENTS_GET_UPDATES_RESPONSE_EVENT_H_
-#define COMPONENTS_SYNC_ENGINE_EVENTS_GET_UPDATES_RESPONSE_EVENT_H_
+#ifndef COMPONENTS_SYNC_ENGINE_IMPL_EVENTS_GET_UPDATES_RESPONSE_EVENT_H_
+#define COMPONENTS_SYNC_ENGINE_IMPL_EVENTS_GET_UPDATES_RESPONSE_EVENT_H_
 
 #include <memory>
 #include <string>
@@ -45,4 +45,4 @@ class GetUpdatesResponseEvent : public ProtocolEvent {
 
 }  // namespace syncer
 
-#endif  // COMPONENTS_SYNC_ENGINE_EVENTS_GET_UPDATES_RESPONSE_EVENT_H_
+#endif  // COMPONENTS_SYNC_ENGINE_IMPL_EVENTS_GET_UPDATES_RESPONSE_EVENT_H_