[Sync] Convert sync to a static library.

components/sync/engine_impl/directory_update_handler.h

 // Copyright 2014 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_ENGINE_IMPL_DIRECTORY_UPDATE_HANDLER_H_
 #define COMPONENTS_SYNC_ENGINE_IMPL_DIRECTORY_UPDATE_HANDLER_H_
 
 #include <map>
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "components/sync/base/model_type.h"
-#include "components/sync/base/sync_export.h"
 #include "components/sync/base/syncer_error.h"
 #include "components/sync/engine_impl/process_updates_util.h"
 #include "components/sync/engine_impl/update_handler.h"
 
 namespace sync_pb {
 class DataTypeProgressMarker;
 class GarbageCollectionDirective;
 class GetUpdatesResponse;
 }
 
 namespace syncer {
 
 namespace sessions {
 class StatusController;
 }
 
 namespace syncable {
 class Directory;
 }
 
 class DirectoryTypeDebugInfoEmitter;
 class ModelSafeWorker;
 
 // This class represents the syncable::Directory's processes for requesting and
 // processing updates from the sync server.
 //
 // Each instance of this class represents a particular type in the
 // syncable::Directory.  It can store and retreive that type's progress markers.
 // It can also process a set of received SyncEntities and store their data.
-class SYNC_EXPORT DirectoryUpdateHandler : public UpdateHandler {
+class DirectoryUpdateHandler : public UpdateHandler {
  public:
   DirectoryUpdateHandler(syncable::Directory* dir,
                          ModelType type,
                          scoped_refptr<ModelSafeWorker> worker,
                          DirectoryTypeDebugInfoEmitter* debug_info_emitter);
   ~DirectoryUpdateHandler() override;
 
   // UpdateHandler implementation.
   bool IsInitialSyncEnded() const override;
   void GetDownloadProgress(
@@ skipping 50 matching lines @@
   DirectoryTypeDebugInfoEmitter* debug_info_emitter_;
 
   std::unique_ptr<sync_pb::GarbageCollectionDirective> cached_gc_directive_;
 
   DISALLOW_COPY_AND_ASSIGN(DirectoryUpdateHandler);
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_ENGINE_IMPL_DIRECTORY_UPDATE_HANDLER_H_