Enable arm/linux chromium to build with gn

mojo/runner/host/linux_sandbox.cc

 // Copyright 2015 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 "mojo/runner/host/linux_sandbox.h"
 
 #include <fcntl.h>
 #include <sys/syscall.h>
 
 #include "base/bind.h"
 #include "base/debug/leak_annotations.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/rand_util.h"
 #include "base/sys_info.h"
 #include "sandbox/linux/bpf_dsl/policy.h"
 #include "sandbox/linux/bpf_dsl/trap_registry.h"
 #include "sandbox/linux/seccomp-bpf-helpers/baseline_policy.h"
 #include "sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.h"
 #include "sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.h"
 #include "sandbox/linux/seccomp-bpf-helpers/syscall_sets.h"
 #include "sandbox/linux/seccomp-bpf/sandbox_bpf.h"
 #include "sandbox/linux/services/credentials.h"
 #include "sandbox/linux/services/namespace_sandbox.h"
 #include "sandbox/linux/services/proc_util.h"
 #include "sandbox/linux/services/thread_helpers.h"
+#include "sandbox/linux/system_headers/linux_syscalls.h"
 
 using sandbox::syscall_broker::BrokerFilePermission;
 
 namespace mojo {
 namespace runner {
 
 namespace {
 
 intptr_t SandboxSIGSYSHandler(const struct sandbox::arch_seccomp_data& args,
                               void* aux) {
@@ skipping 110 matching lines @@
   ALLOW_UNUSED_LOCAL(leaked_broker);
   ANNOTATE_LEAKING_OBJECT_PTR(leaked_broker);
 }
 
 void LinuxSandbox::Seal() {
   proc_fd_.reset();
 }
 
 }  // namespace runner
 }  // namespace mojo