sync: Specialize functions that fetch type root

sync/syncable/mutable_entry.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 SYNC_SYNCABLE_MUTABLE_ENTRY_H_
 #define SYNC_SYNCABLE_MUTABLE_ENTRY_H_
 
 #include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/syncable/entry.h"
@@ skipping 17 matching lines @@
   void Init(WriteTransaction* trans, ModelType model_type,
             const Id& parent_id, const std::string& name);
 
  public:
   MutableEntry(WriteTransaction* trans, CreateNewUpdateItem, const Id& id);
   MutableEntry(WriteTransaction* trans, Create, ModelType model_type,
                const Id& parent_id, const std::string& name);
   MutableEntry(WriteTransaction* trans, GetByHandle, int64);
   MutableEntry(WriteTransaction* trans, GetById, const Id&);
   MutableEntry(WriteTransaction* trans, GetByClientTag, const std::string& tag);
-  MutableEntry(WriteTransaction* trans, GetByServerTag, const std::string& tag);
+  MutableEntry(WriteTransaction* trans, GetTypeRoot, ModelType type);
 
   inline WriteTransaction* write_transaction() const {
     return write_transaction_;
   }
 
   // Model-changing setters.  These setters make user-visible changes that will
   // need to be communicated either to the local model or the sync server.
   void PutLocalExternalId(int64 value);
   void PutMtime(base::Time value);
   void PutCtime(base::Time value);
@@ skipping 28 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(MutableEntry);
 };
 
 // This function sets only the flags needed to get this entry to sync.
 bool MarkForSyncing(syncable::MutableEntry* e);
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif  // SYNC_SYNCABLE_MUTABLE_ENTRY_H_