[Cronet] Initialize disable_quic_bidirectional_streams and QUIC protocol

components/cronet/android/cronet_bidirectional_stream_adapter.cc

Index: components/cronet/android/cronet_bidirectional_stream_adapter.cc
diff --git a/components/cronet/android/cronet_bidirectional_stream_adapter.cc b/components/cronet/android/cronet_bidirectional_stream_adapter.cc
index 2d040b2f535e3c61350c05dc61cb10d4d0051d1b..f259f3bf8f5a97ded278a2ec6ba452a87eb6ebc2 100644
--- a/components/cronet/android/cronet_bidirectional_stream_adapter.cc
+++ b/components/cronet/android/cronet_bidirectional_stream_adapter.cc
@@ -188,6 +188,10 @@ void CronetBidirectionalStreamAdapter::OnHeadersReceived(
   switch (bidi_stream_->GetProtocol()) {
     case net::kProtoHTTP2:
       protocol = "h2";
+      break;
+    case net::kProtoQUIC1SPDY3:
+      protocol = "quic/1+spdy/3";
+      break;
     default:
       break;
   }