Convert the renegotiation extension to the new system.

This change also switches the behaviour of the client. Previously the
client would send the SCSV rather than the extension, but now it'll only
do that for SSLv3 connections.

Change-Id: I67a04b8abbef2234747c0dac450458deb6b0cd0a
Reviewed-on: https://boringssl-review.googlesource.com/5143
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/ssl/test/runner/common.go b/ssl/test/runner/common.go
index c7ccf80..2e30208 100644
--- a/ssl/test/runner/common.go
+++ b/ssl/test/runner/common.go
@@ -476,6 +476,10 @@
 	// TLS_FALLBACK_SCSV in the ClientHello.
 	SendFallbackSCSV bool
 
+	// SendRenegotiationSCSV causes the client to include the renegotiation
+	// SCSV in the ClientHello.
+	SendRenegotiationSCSV bool
+
 	// MaxHandshakeRecordLength, if non-zero, is the maximum size of a
 	// handshake record. Handshake messages will be split into multiple
 	// records at the specified size, except that the client_version will
@@ -572,6 +576,10 @@
 	// didn't support the renegotiation info extension.
 	NoRenegotiationInfo bool
 
+	// RequireRenegotiationInfo, if true, causes the client to return an
+	// error if the server doesn't reply with the renegotiation extension.
+	RequireRenegotiationInfo bool
+
 	// SequenceNumberIncrement, if non-zero, causes outgoing sequence
 	// numbers in DTLS to increment by that value rather by 1. This is to
 	// stress the replay bitmap window by simulating extreme packet loss and