[Sync] Move the last things out of core/.

components/sync/core_impl/js_sync_manager_observer.h

-// Copyright 2012 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_CORE_IMPL_JS_SYNC_MANAGER_OBSERVER_H_
-#define COMPONENTS_SYNC_CORE_IMPL_JS_SYNC_MANAGER_OBSERVER_H_
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "components/sync/base/weak_handle.h"
-#include "components/sync/core/sync_manager.h"
-#include "components/sync/protocol/sync_protocol_error.h"
-
-namespace tracked_objects {
-class Location;
-}  // namespace tracked_objects
-
-namespace syncer {
-
-class JsEventDetails;
-class JsEventHandler;
-
-// Routes SyncManager events to a JsEventHandler.
-class JsSyncManagerObserver : public SyncManager::Observer {
- public:
-  JsSyncManagerObserver();
-  ~JsSyncManagerObserver() override;
-
-  void SetJsEventHandler(const WeakHandle<JsEventHandler>& event_handler);
-
-  // SyncManager::Observer implementation.
-  void OnSyncCycleCompleted(const SyncCycleSnapshot& snapshot) override;
-  void OnConnectionStatusChange(ConnectionStatus status) override;
-  void OnInitializationComplete(
-      const WeakHandle<JsBackend>& js_backend,
-      const WeakHandle<DataTypeDebugInfoListener>& debug_info_listener,
-      bool success,
-      ModelTypeSet restored_types) override;
-  void OnActionableError(const SyncProtocolError& sync_protocol_error) override;
-  void OnProtocolEvent(const ProtocolEvent& event) override;
-  void OnMigrationRequested(ModelTypeSet types) override;
-
- private:
-  void HandleJsEvent(const tracked_objects::Location& from_here,
-                     const std::string& name,
-                     const JsEventDetails& details);
-
-  WeakHandle<JsEventHandler> event_handler_;
-
-  DISALLOW_COPY_AND_ASSIGN(JsSyncManagerObserver);
-};
-
-}  // namespace syncer
-
-#endif  // COMPONENTS_SYNC_CORE_IMPL_JS_SYNC_MANAGER_OBSERVER_H_