[Sync] Convert sync to a static library.

components/sync/core/attachments/attachment_service.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_CORE_ATTACHMENTS_ATTACHMENT_SERVICE_H_
 #define COMPONENTS_SYNC_CORE_ATTACHMENTS_ATTACHMENT_SERVICE_H_
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "components/sync/api/attachments/attachment.h"
-#include "components/sync/base/sync_export.h"
 
 namespace syncer {
 
 class AttachmentStore;
 class SyncData;
 
 // AttachmentService is responsible for managing a model type's attachments.
 //
 // Outside of sync code, AttachmentService shouldn't be used directly. Instead
 // use the functionality provided by SyncData and SyncChangeProcessor.
 //
 // Destroying this object does not necessarily cancel outstanding async
 // operations. If you need cancel like semantics, use WeakPtr in the callbacks.
-class SYNC_EXPORT AttachmentService {
+class AttachmentService {
  public:
   // The result of a GetOrDownloadAttachments operation.
   enum GetOrDownloadResult {
     GET_SUCCESS,            // No error, all attachments returned.
     GET_UNSPECIFIED_ERROR,  // An unspecified error occurred.
   };
 
   typedef base::Callback<void(const GetOrDownloadResult&,
                               std::unique_ptr<AttachmentMap> attachments)>
       GetOrDownloadCallback;
@@ skipping 29 matching lines @@
   //
   // A request to upload attachments does not persist across restarts of Chrome.
   //
   // Invokes OnAttachmentUploaded on the Delegate (if provided).
   virtual void UploadAttachments(const AttachmentIdList& attachment_ids) = 0;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_CORE_ATTACHMENTS_ATTACHMENT_SERVICE_H_