Revert of Server push cancellation: add a finch trial parameter (patchset #14 id:280001 of https://…

net/quic/core/quic_session.cc

Index: net/quic/core/quic_session.cc
diff --git a/net/quic/core/quic_session.cc b/net/quic/core/quic_session.cc
index b4d73481a17be67676647bd2c6e548ffe5b1f71e..6160cdd2a31c4df6d46fa609fec9ebde82864929 100644
--- a/net/quic/core/quic_session.cc
+++ b/net/quic/core/quic_session.cc
@@ -95,10 +95,6 @@ void QuicSession::OnRstStream(const QuicRstStreamFrame& frame) {
     return;
   }
 
-  if (visitor_) {
-    visitor_->OnRstStreamReceived(frame);
-  }
-
   QuicStream* stream = GetOrCreateDynamicStream(frame.stream_id);
   if (!stream) {
     HandleRstOnValidNonexistentStream(frame);