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

jingle/notifier/base/chrome_async_socket_unittest.cc

Index: jingle/notifier/base/chrome_async_socket_unittest.cc
diff --git a/jingle/notifier/base/chrome_async_socket_unittest.cc b/jingle/notifier/base/chrome_async_socket_unittest.cc
index 08dbf301a463065b7bab4bf9f923994f2c5528a6..a64e03f3268bb15bada44c0c1ac4caadb84a5214 100644
--- a/jingle/notifier/base/chrome_async_socket_unittest.cc
+++ b/jingle/notifier/base/chrome_async_socket_unittest.cc
@@ -101,7 +101,7 @@ class AsyncSocketDataProvider : public net::SocketDataProvider {
 // Takes a 32-bit integer in host byte order and converts it to a
 // net::IPAddressNumber.
 net::IPAddressNumber Uint32ToIPAddressNumber(uint32 ip) {
-  uint32 ip_nbo = htonl(ip);
+  uint32 ip_nbo = base::HostToNet32(ip);
   const unsigned char* const ip_start =
       reinterpret_cast<const unsigned char*>(&ip_nbo);
   return net::IPAddressNumber(ip_start, ip_start + (sizeof ip_nbo));