Adds default port handling to FormatUrl.

net/base/net_util.h

Index: net/base/net_util.h
diff --git a/net/base/net_util.h b/net/base/net_util.h
index c74dfd2ea48486b08e16be9fdb700b9d99f06bd0..7f6a8fe0a4f68b9b5c3e67bb117a213b551c41eb 100644
--- a/net/base/net_util.h
+++ b/net/base/net_util.h
@@ -72,8 +72,12 @@ NET_EXPORT extern const FormatUrlType kFormatUrlOmitHTTP;
 NET_EXPORT extern const FormatUrlType kFormatUrlOmitTrailingSlashOnBareHostname;
 
 // Convenience for omitting all unecessary types.
+// TODO(dewittj): Determine if "All" should include omitting the default port.
 NET_EXPORT extern const FormatUrlType kFormatUrlOmitAll;
 
+// Omits the port if it matches the default for the given scheme.
+NET_EXPORT extern const FormatUrlType kFormatUrlOmitDefaultPort;
+
 // Returns the number of explicitly allowed ports; for testing.
 NET_EXPORT_PRIVATE extern size_t GetCountOfExplicitlyAllowedPorts();