[Sync] Renaming sync/api* to sync/model*.

components/sync/model/local_change_observer.h

 // Copyright 2016 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_API_LOCAL_CHANGE_OBSERVER_H_
-#define COMPONENTS_SYNC_API_LOCAL_CHANGE_OBSERVER_H_
+#ifndef COMPONENTS_SYNC_MODEL_LOCAL_CHANGE_OBSERVER_H_
+#define COMPONENTS_SYNC_MODEL_LOCAL_CHANGE_OBSERVER_H_
 
 namespace syncer {
 
 class SyncChange;
 namespace syncable {
 class Entry;
 }  // namespace syncable
 
 // Interface for observers that want to be notified of local sync changes.
 // The OnLocalChange function will be called when a local change made through
 // ProcessSyncChanges is about to be applied to the directory. This is useful
 // for inspecting the specifics of sync data being written locally and comparing
 // it against the current state of the directory. Registering a local change
 // observer is done by calling the AddLocalChangeObserver function on an
 // instance of SyncChangeProcessor.
 class LocalChangeObserver {
  public:
   virtual ~LocalChangeObserver() {}
   // Function called to notify observer of the local change. current_entry
   // should reflect the state of the entry *before* change is applied.
   virtual void OnLocalChange(const syncable::Entry* current_entry,
                              const SyncChange& change) = 0;
 };
 }  // namespace syncer
 
-#endif  // COMPONENTS_SYNC_API_LOCAL_CHANGE_OBSERVER_H_
+#endif  // COMPONENTS_SYNC_MODEL_LOCAL_CHANGE_OBSERVER_H_