Avoid loading ws2_32.dll just to get htons() and friends.

crypto/p224.cc

Index: crypto/p224.cc
diff --git a/crypto/p224.cc b/crypto/p224.cc
index a7cc66b0be3c0195ee7f55a4def7843f25d7af43..d0e4baf3bba8f8c2b06cabce61cb9cc3867e14fc 100644
--- a/crypto/p224.cc
+++ b/crypto/p224.cc
@@ -13,6 +13,14 @@
 
 #include "base/sys_byteorder.h"
 
+#if defined(OS_WIN)
+// Allow htonl/ntohl to be called without requiring ws2_32.dll to be loaded,
+// which isn't available in Chrome's sandbox.  See crbug.com/116591.
+// TODO(wez): Replace these calls with base::htonl() etc when available.
+#define ntohl(x) _byteswap_ulong(x)
+#define htonl(x) _byteswap_ulong(x)
+#endif // OS_WIN
+
 namespace {
 
 // Field element functions.