[Sync] Convert sync to a static library.

components/sync/api/syncable_service.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_API_SYNCABLE_SERVICE_H_
 #define COMPONENTS_SYNC_API_SYNCABLE_SERVICE_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "components/sync/api/attachments/attachment_store.h"
 #include "components/sync/api/sync_change_processor.h"
 #include "components/sync/api/sync_data.h"
 #include "components/sync/api/sync_error.h"
 #include "components/sync/api/sync_merge_result.h"
 #include "components/sync/base/model_type.h"
-#include "components/sync/base/sync_export.h"
 
 namespace syncer {
 
 class AttachmentService;
 class SyncErrorFactory;
 
 // TODO(zea): remove SupportsWeakPtr in favor of having all SyncableService
 // implementers provide a way of getting a weak pointer to themselves.
 // See crbug.com/100114.
-class SYNC_EXPORT SyncableService
-    : public SyncChangeProcessor,
-      public base::SupportsWeakPtr<SyncableService> {
+class SyncableService : public SyncChangeProcessor,
+                        public base::SupportsWeakPtr<SyncableService> {
  public:
   // A StartSyncFlare is useful when your SyncableService has a need for sync
   // to start ASAP, typically because a local change event has occurred but
   // MergeDataAndStartSyncing hasn't been called yet, meaning you don't have a
   // SyncChangeProcessor. The sync subsystem will respond soon after invoking
   // Run() on your flare by calling MergeDataAndStartSyncing. The ModelType
   // parameter is included so that the recieving end can track usage and timing
   // statistics, make optimizations or tradeoffs by type, etc.
   typedef base::Callback<void(ModelType)> StartSyncFlare;
 
@@ skipping 45 matching lines @@
   virtual void SetAttachmentService(
       std::unique_ptr<AttachmentService> attachment_service);
 
  protected:
   ~SyncableService() override;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_API_SYNCABLE_SERVICE_H_