Revert of Linux Sandbox: split the GPU policies to their own file.

content/common/sandbox_linux/sandbox_bpf_base_policy_linux.h

-// Copyright 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 CONTENT_COMMON_SANDBOX_LINUX_SANDBOX_BPF_BASE_POLICY_LINUX_H_
-#define CONTENT_COMMON_SANDBOX_LINUX_SANDBOX_BPF_BASE_POLICY_LINUX_H_
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "sandbox/linux/seccomp-bpf-helpers/baseline_policy.h"
-#include "sandbox/linux/seccomp-bpf/sandbox_bpf_policy.h"
-
-using sandbox::ErrorCode;
-using sandbox::SandboxBPF;
-
-namespace content {
-
-// The "baseline" BPF policy for content/. Any content/ seccomp-bpf policy
-// should inherit from it.
-// It implements the main SandboxBPFPolicy interface. Due to its nature
-// as a "kernel attack surface reduction" layer, it's implementation-defined.
-class SandboxBPFBasePolicy : public sandbox::SandboxBPFPolicy {
- public:
-  SandboxBPFBasePolicy();
-  virtual ~SandboxBPFBasePolicy();
-
-  virtual ErrorCode EvaluateSyscall(SandboxBPF* sandbox_compiler,
-                                    int system_call_number) const OVERRIDE;
-
-  // A policy can implement this hook to run code right before the policy
-  // is passed to the SandboxBPF class and the sandbox is engaged.
-  // If PreSandboxHook() returns true, the sandbox is guaranteed to be
-  // engaged afterwards.
-  // This will be used when enabling the sandbox though
-  // SandboxSeccompBPF::StartSandbox().
-  virtual bool PreSandboxHook();
-
-  // Get the errno(3) to return for filesystem errors.
-  static int GetFSDeniedErrno();
-
- private:
-  // Compose the BaselinePolicy from sandbox/.
-  scoped_ptr<sandbox::BaselinePolicy> baseline_policy_;
-  DISALLOW_COPY_AND_ASSIGN(SandboxBPFBasePolicy);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_COMMON_SANDBOX_LINUX_SANDBOX_BPF_BASE_POLICY_LINUX_H_