Third Party authentication protocol.

remoting/protocol/jingle_session.cc

Index: remoting/protocol/jingle_session.cc
diff --git a/remoting/protocol/jingle_session.cc b/remoting/protocol/jingle_session.cc
index bfab845debed86b9f7b98c032acd653953f14679..a4c1ab4250d642e9996ed06580f95bb4333711fd 100644
--- a/remoting/protocol/jingle_session.cc
+++ b/remoting/protocol/jingle_session.cc
@@ -550,6 +550,7 @@ bool JingleSession::InitializeConfigFromDescription(
 }
 
 void JingleSession::ProcessAuthenticationStep() {
+  DCHECK(CalledOnValidThread());
   DCHECK_EQ(state_, CONNECTED);
 
   if (authenticator_->state() == Authenticator::MESSAGE_READY) {
@@ -565,6 +566,11 @@ void JingleSession::ProcessAuthenticationStep() {
   } else if (authenticator_->state() == Authenticator::REJECTED) {
     CloseInternal(AuthRejectionReasonToErrorCode(
         authenticator_->rejection_reason()));
+  } else if (authenticator_->state() == Authenticator::WAITING_EXTERNAL) {
+    authenticator_->PerformExternalAction(base::Bind(
+        &JingleSession::ProcessAuthenticationStep,
+        // Authenticator is owned by JingleSession, and cannot outlive it.
+        base::Unretained(this)));
   }
 }