Use correct error code: REFUSED_STREAM to reject server push from the server in SPDY

net/spdy/chromium/spdy_session.cc

Index: net/spdy/chromium/spdy_session.cc
diff --git a/net/spdy/chromium/spdy_session.cc b/net/spdy/chromium/spdy_session.cc
index 7158a1fa84eaf68e418da894fa7fab301e07fe1d..57519f1a3daea2da125922b3b12c1bc62a8ad2f9 100644
--- a/net/spdy/chromium/spdy_session.cc
+++ b/net/spdy/chromium/spdy_session.cc
@@ -1591,7 +1591,7 @@ void SpdySession::TryCreatePushStream(SpdyStreamId stream_id,
   GURL gurl = GetUrlFromHeaderBlock(headers);
   if (!gurl.is_valid()) {
     EnqueueResetStreamFrame(
-        stream_id, request_priority, ERROR_CODE_PROTOCOL_ERROR,
+        stream_id, request_priority, ERROR_CODE_REFUSED_STREAM,
         "Pushed stream url was invalid: " + gurl.possibly_invalid_spec());
     return;
   }
@@ -1660,7 +1660,7 @@ void SpdySession::TryCreatePushStream(SpdyStreamId stream_id,
   if (pushed_it != unclaimed_pushed_streams_.end() &&
       pushed_it->first == gurl) {
     EnqueueResetStreamFrame(
-        stream_id, request_priority, ERROR_CODE_PROTOCOL_ERROR,
+        stream_id, request_priority, ERROR_CODE_REFUSED_STREAM,
         "Received duplicate pushed stream with url: " + gurl.spec());
     return;
   }