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

components/sync/test/engine/mock_model_type_worker.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/test/engine/mock_model_type_worker.h"
 
-#include <stddef.h>
-#include <stdint.h>
-
 #include "base/logging.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/syncable/syncable_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer_v2 {
 
 namespace {
 
 }  // namespace
@@ skipping 218 matching lines @@
     return it->second;
   }
 }
 
 void MockModelTypeWorker::SetServerVersion(const std::string& tag_hash,
                                            int64_t version) {
   server_versions_[tag_hash] = version;
 }
 
 }  // namespace syncer_v2