Remove HttpStreamFactory::spdy_enabled_ static member and accessors.

net/http/http_network_session.cc

Index: net/http/http_network_session.cc
diff --git a/net/http/http_network_session.cc b/net/http/http_network_session.cc
index bf2828f40d9ecda502a71d3ca1cba618e3f8e975..cbac7db0f14836f03f746e96113aeb1288453d0b 100644
--- a/net/http/http_network_session.cc
+++ b/net/http/http_network_session.cc
@@ -364,17 +364,7 @@ bool HttpNetworkSession::IsProtocolEnabled(AlternateProtocol protocol) const {
 }
 
 void HttpNetworkSession::GetAlpnProtos(NextProtoVector* alpn_protos) const {
-  if (HttpStreamFactory::spdy_enabled()) {
-    *alpn_protos = next_protos_;
-  } else {
-    // HttpStreamFactory::spdy_enabled() only affects SPDY/3.1,
-    // but not other ALPN protocols.
-    alpn_protos->clear();
-    for (auto proto : next_protos_) {
-      if (proto != kProtoSPDY31)
-        alpn_protos->push_back(proto);
-    }
-  }
+  *alpn_protos = next_protos_;
 }
 
 void HttpNetworkSession::GetNpnProtos(NextProtoVector* npn_protos) const {