--- base/sys_info_posix.cc.orig	2017-09-05 21:05:11.000000000 +0200
+++ base/sys_info_posix.cc	2017-09-11 02:55:59.022874000 +0200
@@ -35,7 +35,7 @@
 
 namespace {
 
-#if !defined(OS_OPENBSD) && !defined(OS_FUCHSIA)
+#if !defined(OS_BSD) && !defined(OS_FUCHSIA)
 int NumberOfProcessors() {
   // sysconf returns the number of "logical" (not "physical") processors on both
   // Mac and Linux.  So we get the number of max available "logical" processors.
@@ -128,7 +128,7 @@
 
 namespace base {
 
-#if !defined(OS_OPENBSD) && !defined(OS_FUCHSIA)
+#if !defined(OS_BSD) && !defined(OS_FUCHSIA)
 int SysInfo::NumberOfProcessors() {
   return g_lazy_number_of_processors.Get().value();
 }
@@ -219,6 +219,8 @@
     arch = "x86";
   } else if (arch == "amd64") {
     arch = "x86_64";
+  } else if (arch == "arm64") {
+    arch = "aarch64";
   } else if (std::string(info.sysname) == "AIX") {
     arch = "ppc64";
   }