Added a net::BidirectionalStream to expose a bidirectional streaming interface

net/http/http_network_transaction.cc

Index: net/http/http_network_transaction.cc
diff --git a/net/http/http_network_transaction.cc b/net/http/http_network_transaction.cc
index 8a8e7421e4bbd5d3e8f5390f3fd5f601c176b45d..d00e31f4ab7f718e55273f7f9b30b85fe4cd4278 100644
--- a/net/http/http_network_transaction.cc
+++ b/net/http/http_network_transaction.cc
@@ -511,6 +511,13 @@ void HttpNetworkTransaction::OnStreamReady(const SSLConfig& used_ssl_config,
   OnIOComplete(OK);
 }
 
+void HttpNetworkTransaction::OnBidirectionalStreamJobReady(
+    const SSLConfig& used_ssl_config,
+    const ProxyInfo& used_proxy_info,
+    BidirectionalStreamJob* stream) {
+  NOTREACHED();
+}
+
 void HttpNetworkTransaction::OnWebSocketHandshakeStreamReady(
     const SSLConfig& used_ssl_config,
     const ProxyInfo& used_proxy_info,