Update Commit and GetUpdatesResponse messages to include attachment ids.

sync/syncable/model_neutral_mutable_entry.h

 // Copyright 2013 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_MODEL_NEUTRAL_MUTABLE_ENTRY_H_
 #define SYNC_SYNCABLE_MODEL_NEUTRAL_MUTABLE_ENTRY_H_
 
 #include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/syncable/entry.h"
@@ skipping 53 matching lines @@
   bool PutIsUnappliedUpdate(bool value);
   void PutServerIsDir(bool value);
   void PutServerIsDel(bool value);
   void PutServerNonUniqueName(const std::string& value);
   bool PutUniqueServerTag(const std::string& value);
   bool PutUniqueClientTag(const std::string& value);
   void PutUniqueBookmarkTag(const std::string& tag);
   void PutServerSpecifics(const sync_pb::EntitySpecifics& value);
   void PutBaseServerSpecifics(const sync_pb::EntitySpecifics& value);
   void PutServerUniquePosition(const UniquePosition& value);
+  void PutServerAttachmentMetadata(const sync_pb::AttachmentMetadata& value);
   void PutSyncing(bool value);
 
   // Do a simple property-only update of the PARENT_ID field.  Use with caution.
   //
   // The normal Put(IS_PARENT) call will move the item to the front of the
   // sibling order to maintain the linked list invariants when the parent
   // changes.  That's usually what you want to do, but it's inappropriate
   // when the caller is trying to change the parent ID of a the whole set
   // of children (e.g. because the ID changed during a commit).  For those
   // cases, there's this function.  It will corrupt the sibling ordering
@@ skipping 23 matching lines @@
   // Scope: Set on construction, never changed after that.
   BaseWriteTransaction* const base_write_transaction_;
 
   DISALLOW_COPY_AND_ASSIGN(ModelNeutralMutableEntry);
 };
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif  // SYNC_SYNCABLE_MODEL_NEUTRAL_MUTABLE_ENTRY_H_