Make the request initiator Optional

net/base/registry_controlled_domains/registry_controlled_domain.h

Index: net/base/registry_controlled_domains/registry_controlled_domain.h
diff --git a/net/base/registry_controlled_domains/registry_controlled_domain.h b/net/base/registry_controlled_domains/registry_controlled_domain.h
index bbe8f0b8145bf1b1c74abbb18de16e5ba959ee95..a3bfbab3db0d55aaba097c97f6c1b9a199813334 100644
--- a/net/base/registry_controlled_domains/registry_controlled_domain.h
+++ b/net/base/registry_controlled_domains/registry_controlled_domain.h
@@ -117,6 +117,7 @@
 
 #include <string>
 
+#include "base/optional.h"
 #include "base/strings/string_piece.h"
 #include "net/base/net_export.h"
 
@@ -199,6 +200,9 @@ NET_EXPORT bool SameDomainOrHost(const GURL& gurl1, const GURL& gurl2,
 NET_EXPORT bool SameDomainOrHost(const url::Origin& origin1,
                                  const url::Origin& origin2,
                                  PrivateRegistryFilter filter);
+NET_EXPORT bool SameDomainOrHost(const url::Origin& origin1,
+                                 const base::Optional<url::Origin>& origin2,
+                                 PrivateRegistryFilter filter);

[mmenke, 2016/11/03 17:58:58]

Mention behavior for a null origin?

[clamy, 2016/11/04 16:03:50]

Done.

 
 // Finds the length in bytes of the registrar portion of the host in the
 // given GURL.  Returns std::string::npos if the GURL is invalid or has no