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

content/common/sandbox_linux/bpf_gpu_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_BPF_GPU_POLICY_LINUX_H_
-#define CONTENT_COMMON_SANDBOX_LINUX_BPF_GPU_POLICY_LINUX_H_
-
-#include <string>
-#include <vector>
-
-#include "content/common/sandbox_linux/sandbox_bpf_base_policy_linux.h"
-
-namespace sandbox {
-class BrokerProcess;
-}
-
-namespace content {
-
-class GpuProcessPolicy : public SandboxBPFBasePolicy {
- public:
-  GpuProcessPolicy();
-  virtual ~GpuProcessPolicy();
-
-  virtual ErrorCode EvaluateSyscall(SandboxBPF* sandbox_compiler,
-                                    int system_call_number) const OVERRIDE;
-
-  virtual bool PreSandboxHook() OVERRIDE;
-
- protected:
-  // Start a broker process to handle open() inside the sandbox.
-  // |broker_sandboxer_callback| is a callback that will enable a suitable
-  // sandbox for the broker process itself.
-  // |read_whitelist_extra| and |write_whitelist_extra| are lists of file
-  // names that should be whitelisted by the broker process, in addition to
-  // the basic ones.
-  void InitGpuBrokerProcess(
-      bool (*broker_sandboxer_callback)(void),
-      const std::vector<std::string>& read_whitelist_extra,
-      const std::vector<std::string>& write_whitelist_extra);
-
-  sandbox::BrokerProcess* broker_process() { return broker_process_; }
-
- private:
-  // A BrokerProcess is a helper that is started before the sandbox is engaged
-  // and will serve requests to access files over an IPC channel. The client of
-  // this runs from a SIGSYS handler triggered by the seccomp-bpf sandbox.
-  // This should never be destroyed, as after the sandbox is started it is
-  // vital to the process.
-  // This is allocated by InitGpuBrokerProcess, called from PreSandboxHook(),
-  // which executes iff the sandbox is going to be enabled afterwards.
-  sandbox::BrokerProcess* broker_process_;
-  DISALLOW_COPY_AND_ASSIGN(GpuProcessPolicy);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_COMMON_SANDBOX_LINUX_BPF_GPU_POLICY_LINUX_H_