[Sync] Convert sync to a static library.

components/sync/syncable/syncable_base_transaction.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_SYNCABLE_SYNCABLE_BASE_TRANSACTION_H_
 #define COMPONENTS_SYNC_SYNCABLE_SYNCABLE_BASE_TRANSACTION_H_
 
 #include <string>
 
 #include "base/location.h"
 #include "base/macros.h"
-#include "components/sync/base/sync_export.h"
 #include "components/sync/syncable/syncable_id.h"
 
 namespace syncer {
 namespace syncable {
 
 class Directory;
 
 // A WriteTransaction has a writer tag describing which body of code is doing
 // the write. This is defined up here since WriteTransactionInfo also contains
 // one.
 enum WriterTag {
   INVALID,
   SYNCER,
   AUTHWATCHER,
   UNITTEST,
   VACUUM_AFTER_SAVE,
   HANDLE_SAVE_FAILURE,
   PURGE_ENTRIES,
   SYNCAPI,
 };
 
 // Make sure to update this if you update WriterTag.
 std::string WriterTagToString(WriterTag writer_tag);
 
-class SYNC_EXPORT BaseTransaction {
+class BaseTransaction {
  public:
   static Id root_id();
 
   Directory* directory() const;
 
   virtual ~BaseTransaction();
 
   // This should be called when a database corruption is detected and there is
   // no way for us to recover short of wiping the database clean. When this is
   // called we set a bool in the transaction. The caller has to unwind the
@@ skipping 31 matching lines @@
 
  private:
   friend class Entry;
   DISALLOW_COPY_AND_ASSIGN(BaseTransaction);
 };
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_SYNCABLE_SYNCABLE_BASE_TRANSACTION_H_