Use NSS to generate Origin-Bound Certs on Win and Mac.

net/base/x509_certificate_win.cc

Index: net/base/x509_certificate_win.cc
diff --git a/net/base/x509_certificate_win.cc b/net/base/x509_certificate_win.cc
index 1336f8c62ad2681f69e008e0f3b3984a9203034e..5c53a15bb55e39144d80d3fff9a6995a1a3074fa 100644
--- a/net/base/x509_certificate_win.cc
+++ b/net/base/x509_certificate_win.cc
@@ -630,16 +630,6 @@ X509Certificate* X509Certificate::CreateSelfSigned(
   return cert;
 }
 
-// static
-X509Certificate* X509Certificate::CreateOriginBound(
-    crypto::RSAPrivateKey* key,
-    const std::string& origin,
-    uint32 serial_number,
-    base::TimeDelta valid_duration) {
-  NOTIMPLEMENTED();
-  return NULL;
-}
-
 void X509Certificate::GetSubjectAltName(
     std::vector<std::string>* dns_names,
     std::vector<std::string>* ip_addrs) const {