Move sanbox_export.h to //sandbox from //sandbox/linux and split root OWNERS file.

sandbox/linux/seccomp-bpf/die.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_DIE_H__
 #define SANDBOX_LINUX_SECCOMP_BPF_DIE_H__
 
 #include "base/basictypes.h"
-#include "sandbox/linux/sandbox_export.h"
+#include "sandbox/sandbox_export.h"
 
 namespace sandbox {
 
 // This is the main API for using this file. Prints a error message and
 // exits with a fatal error. This is not async-signal safe.
 #define SANDBOX_DIE(m) sandbox::Die::SandboxDie(m, __FILE__, __LINE__)
 
 // An async signal safe version of the same API. Won't print the filename
 // and line numbers.
 #define RAW_SANDBOX_DIE(m) sandbox::Die::RawSandboxDie(m)
@@ skipping 39 matching lines @@
  private:
   static bool simple_exit_;
   static bool suppress_info_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Die);
 };
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_LINUX_SECCOMP_BPF_DIE_H__