[Sync] Move SharedModelTypeProcessor to model_impl/.

components/sync/model_impl/processor_entity_tracker.h

Index: components/sync/model_impl/processor_entity_tracker.h
diff --git a/components/sync/core/processor_entity_tracker.h b/components/sync/model_impl/processor_entity_tracker.h
similarity index 96%
rename from components/sync/core/processor_entity_tracker.h
rename to components/sync/model_impl/processor_entity_tracker.h
index 718101f9ed38a3dcd5119ce5f360e1ca595d2b40..718c3c725effec3428e33511b663ffd458106859 100644
--- a/components/sync/core/processor_entity_tracker.h
+++ b/components/sync/model_impl/processor_entity_tracker.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_CORE_PROCESSOR_ENTITY_TRACKER_H_
-#define COMPONENTS_SYNC_CORE_PROCESSOR_ENTITY_TRACKER_H_
+#ifndef COMPONENTS_SYNC_MODEL_IMPL_PROCESSOR_ENTITY_TRACKER_H_
+#define COMPONENTS_SYNC_MODEL_IMPL_PROCESSOR_ENTITY_TRACKER_H_
 
 #include <stdint.h>
 
@@ -150,4 +150,4 @@ class ProcessorEntityTracker {
 
 }  // namespace syncer
 
-#endif  // COMPONENTS_SYNC_CORE_PROCESSOR_ENTITY_TRACKER_H_
+#endif  // COMPONENTS_SYNC_MODEL_IMPL_PROCESSOR_ENTITY_TRACKER_H_