HTTP2 draft 13: support unknown frame types and settings types as extensions.

net/spdy/buffered_spdy_framer.cc

Index: net/spdy/buffered_spdy_framer.cc
diff --git a/net/spdy/buffered_spdy_framer.cc b/net/spdy/buffered_spdy_framer.cc
index 8424a15e64d0ba6b15fc03187186ed138f0b1b60..fdc65a93c9fb20bb64c5c1f4b3d6aba5c9c0885f 100644
--- a/net/spdy/buffered_spdy_framer.cc
+++ b/net/spdy/buffered_spdy_framer.cc
@@ -234,6 +234,11 @@ void BufferedSpdyFramer::OnPushPromise(SpdyStreamId stream_id,
 void BufferedSpdyFramer::OnContinuation(SpdyStreamId stream_id, bool end) {
 }
 
+bool BufferedSpdyFramer::OnUnknownFrame(SpdyStreamId stream_id,
+                                        int frame_type) {
+  return visitor_->OnUnknownFrame(stream_id, frame_type);
+}
+
 SpdyMajorVersion BufferedSpdyFramer::protocol_version() {
   return spdy_framer_.protocol_version();
 }