components: Cleanup class/struct fwd declarations

components/sync/syncable/nigori_util.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_NIGORI_UTIL_H_
 #define COMPONENTS_SYNC_SYNCABLE_NIGORI_UTIL_H_
 
 #include "base/compiler_specific.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/protocol/nigori_specifics.pb.h"
 
 namespace sync_pb {
 class EntitySpecifics;
 }  // namespace sync_pb
 
 namespace syncer {
 
-class Cryptographer;
-
 namespace syncable {
 
 const char kEncryptedString[] = "encrypted";
 
 class BaseTransaction;
 class Entry;
 class MutableEntry;
 class WriteTransaction;
 
 // Various utility methods for nigori-based multi-type encryption.
@@ skipping 39 matching lines @@
                                     sync_pb::NigoriSpecifics* nigori);
 
 // Extracts the set of encrypted types from a nigori node.
 ModelTypeSet GetEncryptedTypesFromNigori(
     const sync_pb::NigoriSpecifics& nigori);
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_SYNCABLE_NIGORI_UTIL_H_