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

components/sync/api/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_
-
-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_