Delete unused trailer_bytes_read() in quic_spdy_client_stream.h.

net/tools/quic/quic_spdy_client_stream.h

Index: net/tools/quic/quic_spdy_client_stream.h
diff --git a/net/tools/quic/quic_spdy_client_stream.h b/net/tools/quic/quic_spdy_client_stream.h
index 702c8ba9bdc486d35e760c2b745e67f82953d82f..b858924835287f8cef0bf807413dd766fca9550c 100644
--- a/net/tools/quic/quic_spdy_client_stream.h
+++ b/net/tools/quic/quic_spdy_client_stream.h
@@ -64,8 +64,6 @@ class QuicSpdyClientStream : public QuicSpdyStream {
 
   size_t header_bytes_written() const { return header_bytes_written_; }
 
-  size_t trailer_bytes_read() const { return header_bytes_read_; }
-
   int response_code() const { return response_code_; }
 
   // While the server's SetPriority shouldn't be called externally, the creator