Use the exact-width integer types defined in <stdint.h> rather than

net/base/network_interfaces_mac.cc

 // Copyright (c) 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 "net/base/network_interfaces_mac.h"
 
 #include <ifaddrs.h>
 #include <net/if.h>
 #include <netinet/in.h>
 #include <set>
@@ skipping 178 matching lines @@
     IPEndPoint address;
 
     int addr_size = 0;
     if (addr->sa_family == AF_INET6) {
       addr_size = sizeof(sockaddr_in6);
     } else if (addr->sa_family == AF_INET) {
       addr_size = sizeof(sockaddr_in);
     }
 
     if (address.FromSockAddr(addr, addr_size)) {
-      uint8 prefix_length = 0;
+      uint8_t prefix_length = 0;
       if (interface->ifa_netmask) {
         // If not otherwise set, assume the same sa_family as ifa_addr.
         if (interface->ifa_netmask->sa_family == 0) {
           interface->ifa_netmask->sa_family = addr->sa_family;
         }
         IPEndPoint netmask;
         if (netmask.FromSockAddr(interface->ifa_netmask, addr_size)) {
           prefix_length = MaskPrefixLength(netmask.address());
         }
       }
@@ skipping 32 matching lines @@
   freeifaddrs(interfaces);
   return result;
 }
 
 std::string GetWifiSSID() {
   NOTIMPLEMENTED();
   return "";
 }
 
 }  // namespace net