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

content/common/sandbox_linux/bpf_cros_arm_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_CROS_ARM_GPU_POLICY_LINUX_H_
-#define CONTENT_COMMON_SANDBOX_LINUX_BPF_CROS_ARM_GPU_POLICY_LINUX_H_
-
-#include "content/common/sandbox_linux/bpf_gpu_policy_linux.h"
-
-namespace content {
-
-// This policy is for Chrome OS ARM.
-class CrosArmGpuProcessPolicy : public GpuProcessPolicy {
- public:
-  explicit CrosArmGpuProcessPolicy(bool allow_shmat);
-  virtual ~CrosArmGpuProcessPolicy();
-
-  virtual ErrorCode EvaluateSyscall(SandboxBPF* sandbox_compiler,
-                                    int system_call_number) const OVERRIDE;
-  virtual bool PreSandboxHook() OVERRIDE;
-
- private:
-  const bool allow_shmat_;  // Allow shmat(2).
-  DISALLOW_COPY_AND_ASSIGN(CrosArmGpuProcessPolicy);
-};
-
-}  // namespace content
-
-#endif // CONTENT_COMMON_SANDBOX_LINUX_BPF_CROS_ARM_GPU_POLICY_LINUX_H_