Add base::HostToNetXX() & NetToHostXX(), and use them to replace htonX() & ntohX() in Chrome.

net/base/host_resolver_proc.cc

Index: net/base/host_resolver_proc.cc
diff --git a/net/base/host_resolver_proc.cc b/net/base/host_resolver_proc.cc
index e88fa2cef3a0b716d16cc11fa510a2c581e9f654..9360e87f6335d1b4166da2879e29d840a27ddce1 100644
--- a/net/base/host_resolver_proc.cc
+++ b/net/base/host_resolver_proc.cc
@@ -7,6 +7,7 @@
 #include "build/build_config.h"
 
 #include "base/logging.h"
+#include "base/sys_byteorder.h"
 #include "net/base/address_list.h"
 #include "net/base/dns_reloader.h"
 #include "net/base/net_errors.h"
@@ -28,7 +29,8 @@ bool IsAllLocalhostOfOneFamily(const struct addrinfo* ai) {
       case AF_INET: {
         const struct sockaddr_in* addr_in =
             reinterpret_cast<struct sockaddr_in*>(ai->ai_addr);
-        if ((ntohl(addr_in->sin_addr.s_addr) & 0xff000000) == 0x7f000000)
+        if ((base::NetToHost32(addr_in->sin_addr.s_addr) & 0xff000000) ==
+            0x7f000000)
           saw_v4_localhost = true;
         else
           return false;