Updates refactoring of CPU feature detection

runtime/vm/proccpuinfo.h

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#ifndef VM_PROCCPUINFO_H_
+#define VM_PROCCPUINFO_H_
+
+#include "vm/globals.h"
+#if defined(TARGET_OS_LINUX) || defined(TARGET_OS_ANDROID)
+
+#include "vm/allocation.h"
+
+namespace dart {
+
+class ProcCpuInfo : public AllStatic {
+ public:
+  static void InitOnce();
+  static bool FieldContains(const char* field, const char* search_string);
+  static const char* ExtractField(const char* field);
+  static bool HasField(const char* field);
+
+ private:
+  static char* data_;
+  static intptr_t datalen_;
+
+  static char* FieldStart(const char* field);
+};
+
+}  // namespace dart
+
+#endif  // defined(TARGET_OS_LINUX) || defined(TARGET_OS_ANDROID)
+
+#endif  // VM_PROCCPUINFO_H_