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

components/sync/test/engine/mock_connection_manager.cc

 // Copyright 2012 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.
 //
 // Mock ServerConnectionManager class for use in client regression tests.
 
 #include "components/sync/test/engine/mock_connection_manager.h"
 
-#include <stdint.h>
-
 #include <map>
 
 #include "base/location.h"
 #include "base/strings/stringprintf.h"
 #include "components/sync/engine_impl/syncer_proto_util.h"
 #include "components/sync/protocol/bookmark_specifics.pb.h"
 #include "components/sync/syncable/directory.h"
 #include "components/sync/syncable/syncable_write_transaction.h"
 #include "components/sync/test/engine/test_id_factory.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 738 matching lines @@
     server_status_ = HttpResponse::SERVER_CONNECTION_OK;
   }
 }
 
 void MockConnectionManager::SetServerStatus(
     HttpResponse::ServerConnectionCode server_status) {
   server_status_ = server_status;
 }
 
 }  // namespace syncer