Add TLS-SRP (RFC 5054) support

net/base/ssl_config_service.h

Index: net/base/ssl_config_service.h
diff --git a/net/base/ssl_config_service.h b/net/base/ssl_config_service.h
index 413d076c2f048f5ead9d65f609041e0004f0afb1..0dfaf0dee71507705a26a4019d5a1d78afcab1cb 100644
--- a/net/base/ssl_config_service.h
+++ b/net/base/ssl_config_service.h
@@ -91,6 +91,11 @@ struct SSLConfig {
   bool ssl3_fallback;  // True if we are falling back to SSL 3.0 (one still
                        // needs to clear tls1_enabled).
 
+  bool use_tls_auth; // True if we should allow the use of SRP cipher suites.
+  bool require_tls_auth; // True if we should only use SRP cipher suites.
+  std::string tls_username;
+  std::string tls_password;
+
   // The list of application level protocols supported. If set, this will
   // enable Next Protocol Negotiation (if supported). This is a list of 8-bit
   // length prefixed strings. The order of the protocols doesn't matter expect