[Sync] Removing duplicate includes, part 2.

components/sync/core_impl/attachments/attachment_uploader_impl.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/core/attachments/attachment_uploader_impl.h"
 
-#include <stdint.h>
-
-#include <string>
 #include <utility>
 #include <vector>
 
 #include "base/base64.h"
 #include "base/base64url.h"
 #include "base/bind.h"
 #include "base/location.h"
-#include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/stringprintf.h"
 #include "base/sys_byteorder.h"
-#include "base/threading/non_thread_safe.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/sync/api/attachments/attachment.h"
 #include "components/sync/protocol/sync.pb.h"
 #include "google_apis/gaia/gaia_constants.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "net/url_request/url_request_status.h"
 
@@ skipping 359 matching lines @@
       "%s: %s", kSyncStoreBirthday, encoded_store_birthday.c_str()));
 
   // Use field number to pass ModelType because it's stable and we have server
   // code to decode it.
   const int field_number = GetSpecificsFieldNumberFromModelType(model_type);
   fetcher->AddExtraRequestHeader(
       base::StringPrintf("%s: %d", kSyncDataTypeId, field_number));
 }
 
 }  // namespace syncer