[Sync] Convert sync to a static library.

components/sync/api/attachments/attachment_id.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_ID_H_
 #define COMPONENTS_SYNC_API_ATTACHMENTS_ATTACHMENT_ID_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "components/sync/base/immutable.h"
-#include "components/sync/base/sync_export.h"
 
 namespace sync_pb {
 class AttachmentIdProto;
 }  // namespace sync_pb
 
 namespace syncer {
 
 // Uniquely identifies an attachment.
 //
 // Two attachments with equal (operator==) AttachmentIds are considered
 // equivalent.
-class SYNC_EXPORT AttachmentId {
+class AttachmentId {
  public:
   AttachmentId(const AttachmentId& other);
   ~AttachmentId();
 
   // Default copy and assignment are welcome.
 
   bool operator==(const AttachmentId& other) const;
 
   bool operator!=(const AttachmentId& other) const;
 
@@ skipping 14 matching lines @@
 
   // Returns the size (in bytes) the attachment.
   size_t GetSize() const;
 
   // Returns the crc32c the attachment.
   uint32_t GetCrc32c() const;
 
  private:
   // Necessary since we forward-declare sync_pb::AttachmentIdProto; see comments
   // in immutable.h.
-  struct SYNC_EXPORT ImmutableAttachmentIdProtoTraits {
+  struct ImmutableAttachmentIdProtoTraits {
     typedef sync_pb::AttachmentIdProto* Wrapper;
     static void InitializeWrapper(Wrapper* wrapper);
     static void DestroyWrapper(Wrapper* wrapper);
     static const sync_pb::AttachmentIdProto& Unwrap(const Wrapper& wrapper);
     static sync_pb::AttachmentIdProto* UnwrapMutable(Wrapper* wrapper);
     static void Swap(sync_pb::AttachmentIdProto* t1,
                      sync_pb::AttachmentIdProto* t2);
   };
 
   typedef Immutable<sync_pb::AttachmentIdProto,
                     ImmutableAttachmentIdProtoTraits>
       ImmutableAttachmentIdProto;
 
   ImmutableAttachmentIdProto proto_;
 
   explicit AttachmentId(sync_pb::AttachmentIdProto* proto);
 };
 
 // All public interfaces use AttachmentIdList. AttachmentIdSet is used in
 // implementations of algorithms where set properties are needed.
 typedef std::vector<AttachmentId> AttachmentIdList;
 typedef std::set<AttachmentId> AttachmentIdSet;
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_API_ATTACHMENTS_ATTACHMENT_ID_H_