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 a6655959b2023daed833aa51bff04e67494749fb..7251baaf12fcced6e45f17f22c55fbe3b25421b8 100644
--- a/net/http/http_network_transaction.cc
+++ b/net/http/http_network_transaction.cc
@@ -510,6 +510,13 @@ void HttpNetworkTransaction::OnStreamReady(const SSLConfig& used_ssl_config,
   OnIOComplete(OK);
 }
 
+void HttpNetworkTransaction::OnBidirectionalStreamReady(
+    const SSLConfig& used_ssl_config,
+    const ProxyInfo& used_proxy_info,
+    BidirectionalStream* stream) {
+  NOTREACHED();
+}
+
 void HttpNetworkTransaction::OnWebSocketHandshakeStreamReady(
     const SSLConfig& used_ssl_config,
     const ProxyInfo& used_proxy_info,