Update from chromium https://crrev.com/301315

sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.h

 // Copyright (c) 2013 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.
 
 #ifndef SANDBOX_LINUX_SECCOMP_BPF_HELPERS_SIGSYS_HANDLERS_H_
 #define SANDBOX_LINUX_SECCOMP_BPF_HELPERS_SIGSYS_HANDLERS_H_
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
-#include "sandbox/linux/bpf_dsl/bpf_dsl.h"
+#include "sandbox/linux/bpf_dsl/bpf_dsl_forward.h"
 #include "sandbox/sandbox_export.h"
 
 // The handlers are suitable for use in Trap() error codes. They are
 // guaranteed to be async-signal safe.
 // See sandbox/linux/seccomp-bpf/trap.h to see how they work.
 
 namespace sandbox {
 
 struct arch_seccomp_data;
 
@@ skipping 51 matching lines @@
 SANDBOX_EXPORT const char* GetErrorMessageContentForTests();
 SANDBOX_EXPORT const char* GetCloneErrorMessageContentForTests();
 SANDBOX_EXPORT const char* GetPrctlErrorMessageContentForTests();
 SANDBOX_EXPORT const char* GetIoctlErrorMessageContentForTests();
 SANDBOX_EXPORT const char* GetKillErrorMessageContentForTests();
 SANDBOX_EXPORT const char* GetFutexErrorMessageContentForTests();
 
 }  // namespace sandbox.
 
 #endif  // SANDBOX_LINUX_SECCOMP_BPF_HELPERS_SIGSYS_HANDLERS_H_