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

sandbox/linux/bpf_dsl/bpf_dsl.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 "sandbox/linux/bpf_dsl/bpf_dsl.h"
 
-#include <errno.h>
-
 #include <limits>
 
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "sandbox/linux/bpf_dsl/bpf_dsl_impl.h"
 #include "sandbox/linux/bpf_dsl/policy_compiler.h"
 #include "sandbox/linux/seccomp-bpf/errorcode.h"
 
 namespace sandbox {
 namespace bpf_dsl {
@@ skipping 346 matching lines @@
   // and end up with an appropriately chained tree.
 
   ResultExpr expr = else_result;
   for (const Clause& clause : clause_list_) {
     expr = ResultExpr(
         new const IfThenResultExprImpl(clause.first, clause.second, expr));
   }
   return expr;
 }
 
-ResultExpr SandboxBPFDSLPolicy::InvalidSyscall() const {
-  return Error(ENOSYS);
-}
-
-ResultExpr SandboxBPFDSLPolicy::Trap(TrapRegistry::TrapFnc trap_func,
-                                     const void* aux) {
-  return bpf_dsl::Trap(trap_func, aux);
-}
-
 }  // namespace bpf_dsl
 }  // namespace sandbox
 
 template class scoped_refptr<const sandbox::bpf_dsl::internal::BoolExprImpl>;
 template class scoped_refptr<const sandbox::bpf_dsl::internal::ResultExprImpl>;