Cleanup: Remove unneeded forward declarations in chrome/browser/sync.

chrome/browser/sync/engine/build_and_process_conflict_sets_command.h

-// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 "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 MutableEntry;
 class WriteTransaction;
 }  // namespace syncable
 
 namespace browser_sync {
 
 class ConflictResolver;
 class Cryptographer;
 
 namespace sessions {
 class ConflictProgress;
@@ skipping 37 matching lines @@
   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_