Convert //sandbox to use std::unique_ptr

sandbox/linux/seccomp-bpf/sandbox_bpf.h

 // Copyright (c) 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.
 
 #ifndef SANDBOX_LINUX_SECCOMP_BPF_SANDBOX_BPF_H_
 #define SANDBOX_LINUX_SECCOMP_BPF_SANDBOX_BPF_H_
 
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/files/scoped_file.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "sandbox/linux/bpf_dsl/codegen.h"
 #include "sandbox/sandbox_export.h"
 
 namespace sandbox {
 struct arch_seccomp_data;
 namespace bpf_dsl {
 class Policy;
 }
 
 // This class can be used to apply a syscall sandboxing policy expressed in a
@@ skipping 74 matching lines @@
   // Assembles a BPF filter program from the current policy. After calling this
   // function, you must not call any other sandboxing function.
   CodeGen::Program AssembleFilter();
 
   // Assembles and installs a filter based on the policy that has previously
   // been configured with SetSandboxPolicy().
   void InstallFilter(bool must_sync_threads);
 
   base::ScopedFD proc_fd_;
   bool sandbox_has_started_;
-  scoped_ptr<bpf_dsl::Policy> policy_;
+  std::unique_ptr<bpf_dsl::Policy> policy_;
 
   DISALLOW_COPY_AND_ASSIGN(SandboxBPF);
 };
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_LINUX_SECCOMP_BPF_SANDBOX_BPF_H_