Pepper: Refactor cpu feature attributes.

components/nacl/renderer/sandbox_arch.cc

-// Copyright 2014 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.
-
-#include "base/logging.h"
-#if defined(OS_WIN)
-#include "base/win/windows_version.h"
-#endif
-
-namespace nacl {
-
-const char* GetSandboxArch() {
-#if defined(ARCH_CPU_ARM_FAMILY)
-  return "arm";
-#elif defined(ARCH_CPU_MIPS_FAMILY)
-  return "mips32";
-#elif defined(ARCH_CPU_X86_FAMILY)
-
-#if defined(OS_WIN)
-  // We have to check the host architecture on Windows.
-  // See sandbox_isa.h for an explanation why.
-  if (base::win::OSInfo::GetInstance()->architecture() ==
-      base::win::OSInfo::X64_ARCHITECTURE)
-    return "x86-64";
-  else
-    return "x86-32";
-#elif ARCH_CPU_64_BITS
-  return "x86-64";
-#else
-  return "x86-32";
-#endif  // defined(OS_WIN)
-
-#else
-#error Architecture not supported.
-#endif
-}
-
-}  // namespace nacl