Delete unused code from systeminfo.

webrtc/base/systeminfo.h

 /*
  *  Copyright 2008 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_BASE_SYSTEMINFO_H__
 #define WEBRTC_BASE_SYSTEMINFO_H__
 
 #include <string>
 
 #include "webrtc/base/basictypes.h"
 
 namespace rtc {
 
 class SystemInfo {

[perkj_webrtc, 2016/12/16 12:05:41]

please replace class with ns 
https://google.github.io/styleguide/cppguide.html#Nonmember,_Static_Member,_a...

since it does not contain any methods.

  public:
-  enum Architecture {
-    SI_ARCH_UNKNOWN = -1,
-    SI_ARCH_X86 = 0,
-    SI_ARCH_X64 = 1,
-    SI_ARCH_ARM = 2
-  };
-
   SystemInfo();
-
   // The number of CPU Threads in the system.
   static int GetMaxCpus();
-  // The number of CPU Threads currently available to this process.
-  static int GetCurCpus();
-  // Identity of the CPUs.
-  Architecture GetCpuArchitecture();
-  std::string GetCpuVendor();
-  // Total amount of physical memory, in bytes.
-  int64_t GetMemorySize();
-  // The model name of the machine, e.g. "MacBookAir1,1"
-  std::string GetMachineModel();
 
  private:
   static int logical_cpus_;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_SYSTEMINFO_H__