Modify PeerConnection for end-to-end QuicDataChannel usage

webrtc/p2p/quic/reliablequicstream.h

Index: webrtc/p2p/quic/reliablequicstream.h
diff --git a/webrtc/p2p/quic/reliablequicstream.h b/webrtc/p2p/quic/reliablequicstream.h
index 61d060f850b0ec723cc8f0ea8dbe18f0ebce609a..9737d4e83250432fa9c9cca8bdca62a876e309a3 100644
--- a/webrtc/p2p/quic/reliablequicstream.h
+++ b/webrtc/p2p/quic/reliablequicstream.h
@@ -33,12 +33,15 @@ class ReliableQuicStream : public net::ReliableQuicStream,
   // Process decrypted data into encrypted QUIC packets, which get sent to the
   // QuicPacketWriter. rtc::SR_BLOCK is returned if the operation blocks instead
   // of writing, in which case the data is queued until OnCanWrite() is called.
-  rtc::StreamResult Write(const char* data, size_t len);
+  // If |fin| == true, then this stream closes after sending data.
+  rtc::StreamResult Write(const char* data, size_t len, bool fin = false);
+  // Removes this stream from the QuicSession's stream map.
+  void Close();
 
   // Called when decrypted data is ready to be read.
   sigslot::signal3<net::QuicStreamId, const char*, size_t> SignalDataReceived;
   // Called when stream closed.
-  sigslot::signal2<net::QuicStreamId, net::QuicErrorCode> SignalClosed;
+  sigslot::signal2<net::QuicStreamId, int> SignalClosed;
 
  private:
   RTC_DISALLOW_COPY_AND_ASSIGN(ReliableQuicStream);