Remove SPDY 2.1 support.

net/http/http_network_transaction_spdy3_unittest.cc

Index: net/http/http_network_transaction_spdy3_unittest.cc
diff --git a/net/http/http_network_transaction_spdy3_unittest.cc b/net/http/http_network_transaction_spdy3_unittest.cc
index efbcf390abcd793bd57f67ea74997608196c5bc1..19cbfd74826a43fabd49cd36122aecfbfc8bd50c 100644
--- a/net/http/http_network_transaction_spdy3_unittest.cc
+++ b/net/http/http_network_transaction_spdy3_unittest.cc
@@ -98,7 +98,7 @@ std::vector<std::string> MakeNextProtos(const char* a, ...) {
 // SpdyNextProtos returns a vector of NPN protocol strings for negotiating
 // SPDY.
 std::vector<std::string> SpdyNextProtos() {
-  return MakeNextProtos("http/1.1", "spdy/2", "spdy/2.1", "spdy/3", NULL);
+  return MakeNextProtos("http/1.1", "spdy/2", "spdy/3", NULL);
 }
 
 int GetIdleSocketCountInTransportSocketPool(net::HttpNetworkSession* session) {
@@ -8453,7 +8453,7 @@ TEST_F(HttpNetworkTransactionSpdy3Test, SpdyAlternateProtocolThroughProxy) {
   HttpStreamFactory::set_use_alternate_protocols(true);
   HttpStreamFactory::SetNextProtos(
       MakeNextProtos(
-          "http/1.1", "http1.1", "spdy/2", "spdy/2.1", "spdy/3", "spdy", NULL));
+          "http/1.1", "http1.1", "spdy/2", "spdy/3", "spdy", NULL));
 
   SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));
   HttpAuthHandlerMock::Factory* auth_factory =