[Sync] Convert sync to a static library.

components/sync/api/attachments/attachment.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_API_ATTACHMENTS_ATTACHMENT_H_
 #define COMPONENTS_SYNC_API_ATTACHMENTS_ATTACHMENT_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/ref_counted_memory.h"
 #include "components/sync/api/attachments/attachment_id.h"
-#include "components/sync/base/sync_export.h"
 
 namespace syncer {
 
 // A blob of in-memory data attached to a sync item.
 //
 // While Attachment objects themselves aren't immutable (they are assignable)
 // the data they wrap is immutable.
 //
 // It is cheap to copy Attachments. Feel free to store and return by value.
-class SYNC_EXPORT Attachment {
+class Attachment {
  public:
   Attachment(const Attachment& other);
   ~Attachment();
 
   // Default copy and assignment are welcome.
 
   // Creates an attachment with a unique id and the supplied data.
   //
   // Used when creating a brand new attachment.
   static Attachment Create(const scoped_refptr<base::RefCountedMemory>& data);
@@ skipping 25 matching lines @@
   Attachment(const AttachmentId& id,
              const scoped_refptr<base::RefCountedMemory>& data);
 };
 
 typedef std::vector<syncer::Attachment> AttachmentList;
 typedef std::map<AttachmentId, Attachment> AttachmentMap;
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_API_ATTACHMENTS_ATTACHMENT_H_