sync: Remove the remaining conflict sets code

chrome/browser/sync/engine/build_and_process_conflict_sets_command.h

-// Copyright (c) 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 CHROME_BROWSER_SYNC_ENGINE_BUILD_AND_PROCESS_CONFLICT_SETS_COMMAND_H_
-#define CHROME_BROWSER_SYNC_ENGINE_BUILD_AND_PROCESS_CONFLICT_SETS_COMMAND_H_
-#pragma once
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "chrome/browser/sync/engine/model_changing_syncer_command.h"
-#include "chrome/browser/sync/engine/model_safe_worker.h"
-
-namespace syncable {
-class BaseTransaction;
-class Entry;
-class Id;
-class WriteTransaction;
-}  // namespace syncable
-
-namespace browser_sync {
-
-class ConflictResolver;
-class Cryptographer;
-
-namespace sessions {
-class ConflictProgress;
-class StatusController;
-}
-
-class BuildAndProcessConflictSetsCommand : public ModelChangingSyncerCommand {
- public:
-  BuildAndProcessConflictSetsCommand();
-  virtual ~BuildAndProcessConflictSetsCommand();
-
- protected:
-  // ModelChangingSyncerCommand implementation.
-  virtual std::set<ModelSafeGroup> GetGroupsToChange(
-      const sessions::SyncSession& session) const OVERRIDE;
-  virtual SyncerError ModelChangingExecuteImpl(
-      sessions::SyncSession* session) OVERRIDE;
-
- private:
-  void BuildConflictSets(syncable::BaseTransaction* trans,
-                         sessions::ConflictProgress* conflict_progress);
-
-  void MergeSetsForIntroducedLoops(syncable::BaseTransaction* trans,
-      syncable::Entry* entry,
-      sessions::ConflictProgress* conflict_progress);
-  void MergeSetsForNonEmptyDirectories(syncable::BaseTransaction* trans,
-      syncable::Entry* entry,
-      sessions::ConflictProgress* conflict_progress);
-  void MergeSetsForPositionUpdate(syncable::BaseTransaction* trans,
-      syncable::Entry* entry,
-      sessions::ConflictProgress* conflict_progress);
-
-  DISALLOW_COPY_AND_ASSIGN(BuildAndProcessConflictSetsCommand);
-};
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_SYNC_ENGINE_BUILD_AND_PROCESS_CONFLICT_SETS_COMMAND_H_