Pull seccomp-sandbox in via DEPS rather than using an in-tree copy...

sandbox/linux/seccomp/x86_decode.h

Index: sandbox/linux/seccomp/x86_decode.h
===================================================================
--- sandbox/linux/seccomp/x86_decode.h	(revision 57969)
+++ sandbox/linux/seccomp/x86_decode.h	(working copy)
@@ -1,19 +0,0 @@
-// Copyright (c) 2010 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 X86_DECODE_H__
-#define X86_DECODE_H__
-namespace playground {
-enum {
-    REX_B        = 0x01,
-    REX_X        = 0x02,
-    REX_R        = 0x04,
-    REX_W        = 0x08
-};
-
-unsigned short next_inst(const char **ip, bool is64bit, bool *has_prefix = 0,
-                         char **rex_ptr    = 0, char **mod_rm_ptr = 0,
-                         char **sib_ptr    = 0, bool *is_group   = 0);
-} // namespace
-#endif // X86_DECODE_H__