Stop using SpdySynReplyIR for SPDY 4.

net/http/http_network_transaction_unittest.cc

Index: net/http/http_network_transaction_unittest.cc
diff --git a/net/http/http_network_transaction_unittest.cc b/net/http/http_network_transaction_unittest.cc
index 01756a196547574976bdbc50bf10eb4a0318a3dd..3b15926e75f80073e5fd185847cf6dca8ba1e07f 100644
--- a/net/http/http_network_transaction_unittest.cc
+++ b/net/http/http_network_transaction_unittest.cc
@@ -6388,23 +6388,12 @@ TEST_P(HttpNetworkTransactionTest, BasicAuthSpdyProxy) {
 
   // The proxy responds to the connect with a 407, using a persistent
   // connection.
+  const char* const kAuthStatus = "407";
   const char* const kAuthChallenge[] = {
-    spdy_util_.GetStatusKey(), "407 Proxy Authentication Required",
-    spdy_util_.GetVersionKey(), "HTTP/1.1",
     "proxy-authenticate", "Basic realm=\"MyRealm1\"",
   };
-
-  scoped_ptr<SpdyFrame> conn_auth_resp(
-      spdy_util_.ConstructSpdyControlFrame(NULL,
-                                           0,
-                                           false,
-                                           1,
-                                           LOWEST,
-                                           SYN_REPLY,
-                                           CONTROL_FLAG_NONE,
-                                           kAuthChallenge,
-                                           arraysize(kAuthChallenge),
-                                           0));
+  scoped_ptr<SpdyFrame> conn_auth_resp(spdy_util_.ConstructSpdySynReplyError(
+      kAuthStatus, kAuthChallenge, arraysize(kAuthChallenge) / 2, 1));
 
   scoped_ptr<SpdyFrame> conn_resp(
       spdy_util_.ConstructSpdyGetSynReply(NULL, 0, 3));