Deletes dead code.

net/quic/chromium/quic_chromium_client_stream.h

Index: net/quic/chromium/quic_chromium_client_stream.h
diff --git a/net/quic/chromium/quic_chromium_client_stream.h b/net/quic/chromium/quic_chromium_client_stream.h
index a24bedf2a422f8fecb02f503f1d0beeccdfbf723..77146cd56fdd079f35dc8c7c693a7126561695f4 100644
--- a/net/quic/chromium/quic_chromium_client_stream.h
+++ b/net/quic/chromium/quic_chromium_client_stream.h
@@ -66,15 +66,12 @@ class NET_EXPORT_PRIVATE QuicChromiumClientStream : public QuicSpdyStream {
   ~QuicChromiumClientStream() override;
 
   // QuicSpdyStream
-  void OnStreamHeadersComplete(bool fin, size_t frame_len) override;
   void OnInitialHeadersComplete(bool fin,
                                 size_t frame_len,
                                 const QuicHeaderList& header_list) override;
   void OnTrailingHeadersComplete(bool fin,
                                  size_t frame_len,
                                  const QuicHeaderList& header_list) override;
-  void OnPromiseHeadersComplete(QuicStreamId promised_stream_id,
-                                size_t frame_len) override;
   void OnPromiseHeaderList(QuicStreamId promised_id,
                            size_t frame_len,
                            const QuicHeaderList& header_list) override;