[sync] Componentize sync: Part 6: Add more SYNC_EXPORTs to files in src/sync/

sync/syncable/nigori_handler.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// 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 SYNC_SYNCABLE_NIGORI_HANDLER_H_
 #define SYNC_SYNCABLE_NIGORI_HANDLER_H_
 
+#include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/model_type.h"
 
 namespace google{
 namespace protobuf{
 template <typename T>
 class RepeatedPtrField;
 }
 }
 
 namespace sync_pb {
 class NigoriSpecifics;
 }
 
 namespace syncer {
 namespace syncable {
 
 class BaseTransaction;
 
 // Sync internal interface for dealing with nigori node and querying
 // the current set of encrypted types. Not thread safe, so a sync transaction
 // must be held by a caller whenever invoking methods.
-class NigoriHandler {
+class SYNC_EXPORT_PRIVATE NigoriHandler {
  public:
   NigoriHandler();
   virtual ~NigoriHandler();
 
   // Apply a nigori node update, updating the internal encryption state
   // accordingly.
   virtual void ApplyNigoriUpdate(
       const sync_pb::NigoriSpecifics& nigori,
       syncable::BaseTransaction* const trans) = 0;
 
@@ skipping 14 matching lines @@
 
   // Returns the set of currently encrypted types.
   virtual ModelTypeSet GetEncryptedTypes(
       syncable::BaseTransaction* const trans) const = 0;
 };
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif  // SYNC_SYNCABLE_NIGORI_HANDLER_H_