Certificate Transparency: Correctly handle SCT origin

net/cert/signed_certificate_timestamp.cc

Index: net/cert/signed_certificate_timestamp.cc
diff --git a/net/cert/signed_certificate_timestamp.cc b/net/cert/signed_certificate_timestamp.cc
index 371eea67b30dcb4ea05771b11f4fcb4620bff428..9c0f57d54549f1077818095b19636b718b6540b5 100644
--- a/net/cert/signed_certificate_timestamp.cc
+++ b/net/cert/signed_certificate_timestamp.cc
@@ -23,6 +23,8 @@ bool SignedCertificateTimestamp::LessThan::operator()(
     return lhs->timestamp < rhs->timestamp;
   if (lhs->extensions != rhs->extensions)
     return lhs->extensions < rhs->extensions;
+  if (lhs->origin != rhs->origin)
+    return lhs->origin < rhs->origin;
   return lhs->version < rhs->version;
 }