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// Copyright 2014 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_ENGINE_COMMIT_CONTRIBUTOR_H_
#define SYNC_ENGINE_COMMIT_CONTRIBUTOR_H_
#include <cstddef>
#include "base/memory/scoped_ptr.h"
#include "sync/base/sync_export.h"
namespace syncer {
class CommitContribution;
namespace syncable {
class Directory;
}
// This class represents a source of items to commit to the sync server.
//
// When asked, it can return CommitContribution objects that contain a set of
// items to be committed from this source.
class SYNC_EXPORT CommitContributor {
public:
CommitContributor();
virtual ~CommitContributor() = 0;
// Gathers up to |max_entries| unsynced items from this contributor into a
// CommitContribution. Returns NULL when the contributor has nothing to
// contribute.
virtual scoped_ptr<CommitContribution> GetContribution(
size_t max_entries) = 0;
};
} // namespace syncer
#endif // SYNC_ENGINE_COMMIT_CONTRIBUTOR_H_
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