[Sync] Removing duplicated includes between cc and h files.

components/sync/engine_impl/get_commit_ids.cc

 // 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.
 
 #include "components/sync/engine_impl/get_commit_ids.h"
 
-#include <stddef.h>
-#include <stdint.h>
-
 #include <set>
-#include <vector>
 
 #include "base/macros.h"
 #include "components/sync/base/cryptographer.h"
 #include "components/sync/engine_impl/syncer_util.h"
-#include "components/sync/syncable/directory.h"
 #include "components/sync/syncable/entry.h"
 #include "components/sync/syncable/nigori_handler.h"
 #include "components/sync/syncable/nigori_util.h"
 #include "components/sync/syncable/syncable_base_transaction.h"
 #include "components/sync/syncable/syncable_util.h"
 
 using std::set;
 using std::vector;
 
 namespace syncer {
@@ skipping 545 matching lines @@
   // Add moves and creates, and prepend their uncommitted parents.
   traversal.AddCreatesAndMoves(ready_unsynced_set);
 
   // Add all deletes.
   traversal.AddDeletes(ready_unsynced_set);
 }
 
 }  // namespace
 
 }  // namespace syncer