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

components/sync/base/attachment_id_proto.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 "components/sync/base/attachment_id_proto.h"
 
-#include <stddef.h>
-#include <stdint.h>
-
 #include <string>
 
 #include "base/guid.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 
 namespace syncer {
 
 sync_pb::AttachmentIdProto CreateAttachmentIdProto(size_t size,
                                                    uint32_t crc32c) {
@@ skipping 13 matching lines @@
   sync_pb::AttachmentMetadata result;
   for (int i = 0; i < ids.size(); ++i) {
     sync_pb::AttachmentMetadataRecord* record = result.add_record();
     *record->mutable_id() = ids.Get(i);
     record->set_is_on_server(true);
   }
   return result;
 }
 
 }  // namespace syncer