Invoke AttachmentUploader and update AttachmentIds.

sync/syncable/directory.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_DIRECTORY_H_
 #define SYNC_SYNCABLE_DIRECTORY_H_
 
 #include <deque>
 #include <set>
 #include <string>
@@ skipping 379 matching lines @@
   bool ResetVersionsForType(BaseWriteTransaction* trans, ModelType type);
 
   // Returns true iff the attachment identified by |attachment_id_proto| is
   // linked to an entry.
   //
   // An attachment linked to a deleted entry is still considered linked if the
   // entry hasn't yet been purged.
   bool IsAttachmentLinked(
       const sync_pb::AttachmentIdProto& attachment_id_proto) const;
 
+  // Given attachment id return metahandles to all entries that reference this
+  // attachment.
+  void GetMetahandlesByAttachmentId(
+      BaseTransaction* trans,
+      const sync_pb::AttachmentIdProto& attachment_id_proto,
+      Metahandles* result);
+
  protected:  // for friends, mainly used by Entry constructors
   virtual EntryKernel* GetEntryByHandle(int64 handle);
   virtual EntryKernel* GetEntryByHandle(int64 metahandle,
       ScopedKernelLock* lock);
   virtual EntryKernel* GetEntryById(const Id& id);
   EntryKernel* GetEntryByServerTag(const std::string& tag);
   virtual EntryKernel* GetEntryByClientTag(const std::string& tag);
   bool ReindexId(BaseWriteTransaction* trans, EntryKernel* const entry,
                  const Id& new_id);
   bool ReindexParentId(BaseWriteTransaction* trans, EntryKernel* const entry,
@@ skipping 195 matching lines @@
   // are deleted in native models as well.
   scoped_ptr<DeleteJournal> delete_journal_;
 
   DISALLOW_COPY_AND_ASSIGN(Directory);
 };
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif // SYNC_SYNCABLE_DIRECTORY_H_