Add TLS-SRP (RFC 5054) support

net/http/stream_factory.h

Index: net/http/stream_factory.h
diff --git a/net/http/stream_factory.h b/net/http/stream_factory.h
index 1a7aa77ca18e0e2e28231f03bca4f963e73eedf6..3cc102d731db9b48c20c88d2ee74cf8aa9b43cf7 100644
--- a/net/http/stream_factory.h
+++ b/net/http/stream_factory.h
@@ -13,6 +13,7 @@
 
 namespace net {
 
+class AuthChallengeInfo;
 class BoundNetLog;
 class HostPortPair;
 class HttpAlternateProtocols;
@@ -70,6 +71,9 @@ class StreamRequest {
     // this callback.
     virtual void OnNeedsClientAuth(SSLCertRequestInfo* cert_info) = 0;
 
+    // Called when we need to provide TLS client login credentials.
+    virtual void OnNeedsTLSLogin(AuthChallengeInfo* login_info) = 0;
+
     // This is the failure of the CONNECT request through an HTTPS proxy.
     // Headers can be read from |response_info|, while the body can be read
     // from |stream|.