Add logging for headers sent and received in BidirectionalStreamQuicImpl

net/quic/quic_chromium_client_stream.h

Index: net/quic/quic_chromium_client_stream.h
diff --git a/net/quic/quic_chromium_client_stream.h b/net/quic/quic_chromium_client_stream.h
index a0b94261ec739f67c16f987d6248894f4f80cdcc..41738956b910fac453c39298aee5232dd2f58236 100644
--- a/net/quic/quic_chromium_client_stream.h
+++ b/net/quic/quic_chromium_client_stream.h
@@ -67,6 +67,9 @@ class NET_EXPORT_PRIVATE QuicChromiumClientStream : public QuicSpdyStream {
   void OnDataAvailable() override;
   void OnClose() override;
   void OnCanWrite() override;
+  size_t WriteHeaders(const SpdyHeaderBlock& header_block,
+                      bool fin,
+                      QuicAckListenerInterface* ack_notifier_delegate) override;
   SpdyPriority priority() const override;
 
   // While the server's set_priority shouldn't be called externally, the creator