[Cast Channel] Add support for nonce challenge to Cast channel authentication.

extensions/browser/api/cast_channel/cast_socket.cc

Index: extensions/browser/api/cast_channel/cast_socket.cc
diff --git a/extensions/browser/api/cast_channel/cast_socket.cc b/extensions/browser/api/cast_channel/cast_socket.cc
index 3bb675cf3fd9f74b4424d13044a8cf14ba0d7d99..9ffbc7a5aeb55440ef6e3bc077193ea248b6cfe9 100644
--- a/extensions/browser/api/cast_channel/cast_socket.cc
+++ b/extensions/browser/api/cast_channel/cast_socket.cc
@@ -114,6 +114,25 @@ CastSocketImpl::CastSocketImpl(const std::string& owner_extension_id,
                                bool keep_alive,
                                const scoped_refptr<Logger>& logger,
                                uint64_t device_capabilities)
+    : CastSocketImpl(owner_extension_id,
+                     ip_endpoint,
+                     channel_auth,
+                     net_log,
+                     timeout,
+                     keep_alive,
+                     logger,
+                     device_capabilities,
+                     GetChallengeContext()) {}
+
+CastSocketImpl::CastSocketImpl(const std::string& owner_extension_id,
+                               const net::IPEndPoint& ip_endpoint,
+                               ChannelAuthType channel_auth,
+                               net::NetLog* net_log,
+                               const base::TimeDelta& timeout,
+                               bool keep_alive,
+                               const scoped_refptr<Logger>& logger,
+                               uint64_t device_capabilities,
+                               std::unique_ptr<AuthContext> auth_context)
     : CastSocket(owner_extension_id),
       owner_extension_id_(owner_extension_id),
       channel_id_(0),
@@ -122,6 +141,7 @@ CastSocketImpl::CastSocketImpl(const std::string& owner_extension_id,
       net_log_(net_log),
       keep_alive_(keep_alive),
       logger_(logger),
+      auth_context_(std::move(auth_context)),
       connect_timeout_(timeout),
       connect_timeout_timer_(new base::OneShotTimer),
       is_canceled_(false),
@@ -234,8 +254,8 @@ bool CastSocketImpl::VerifyChannelPolicy(const AuthResult& result) {
 
 bool CastSocketImpl::VerifyChallengeReply() {
   DCHECK(peer_cert_);
-  AuthResult result =
-      AuthenticateChallengeReply(*challenge_reply_, *peer_cert_);
+  AuthResult result = AuthenticateChallengeReply(*challenge_reply_, *peer_cert_,
+                                                 auth_context_.get());
   logger_->LogSocketChallengeReplyEvent(channel_id_, result);
   if (result.success()) {
     VLOG(1) << result.error_message;
@@ -450,7 +470,7 @@ int CastSocketImpl::DoAuthChallengeSend() {
   SetConnectState(proto::CONN_STATE_AUTH_CHALLENGE_SEND_COMPLETE);
 
   CastMessage challenge_message;
-  CreateAuthChallengeMessage(&challenge_message);
+  CreateAuthChallengeMessage(&challenge_message, auth_context_.get());
   VLOG_WITH_CONNECTION(1) << "Sending challenge: "
                           << CastMessageToString(challenge_message);
 
@@ -618,6 +638,7 @@ void CastSocketImpl::SetErrorState(ChannelError error_state) {
   logger_->LogSocketErrorState(channel_id_, ErrorStateToProto(error_state_));
   delegate_->OnError(error_state_);
 }
+
 }  // namespace cast_channel
 }  // namespace api
 }  // namespace extensions