[Sync] Move //sync to //components/sync.

sync/engine/directory_commit_contributor.cc

-// 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.
-
-#include "sync/engine/directory_commit_contributor.h"
-
-#include <stddef.h>
-
-#include "sync/engine/directory_commit_contribution.h"
-#include "sync/sessions/directory_type_debug_info_emitter.h"
-
-namespace syncer {
-
-DirectoryCommitContributor::DirectoryCommitContributor(
-    syncable::Directory* dir,
-    ModelType type,
-    DirectoryTypeDebugInfoEmitter* debug_info_emitter)
-    : dir_(dir),
-      type_(type),
-      debug_info_emitter_(debug_info_emitter) {}
-
-DirectoryCommitContributor::~DirectoryCommitContributor() {}
-
-std::unique_ptr<CommitContribution> DirectoryCommitContributor::GetContribution(
-    size_t max_entries) {
-  return DirectoryCommitContribution::Build(
-      dir_, type_, max_entries, debug_info_emitter_);
-}
-
-}  // namespace syncer