Disable two recent Channel ID-related CLs to investigate a secure QUIC performance degradation.

net/quic/quic_crypto_client_stream.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_crypto_client_stream.h"
 
 #include "net/quic/crypto/crypto_protocol.h"
 #include "net/quic/crypto/crypto_utils.h"
 #include "net/quic/crypto/null_encrypter.h"
 #include "net/quic/quic_client_session_base.h"
@@ skipping 220 matching lines @@
             &crypto_negotiated_params_,
             &out,
             &error_details);
         if (error != QUIC_NO_ERROR) {
           // Flush the cached config so that, if it's bad, the server has a
           // chance to send us another in the future.
           cached->InvalidateServerConfig();
           CloseConnectionWithDetails(error, error_details);
           return;
         }
-        channel_id_sent_ = (channel_id_key_.get() != NULL);
+        // TODO(wtc): a temporary change to measure the performance penalty of
+        // pooling connections less often if channel ID is used.
+        // channel_id_sent_ = (channel_id_key_.get() != NULL);
         if (cached->proof_verify_details()) {
           client_session()->OnProofVerifyDetailsAvailable(
               *cached->proof_verify_details());
         }
         next_state_ = STATE_RECV_SHLO;
         DVLOG(1) << "Client: Sending " << out.DebugString();
         SendHandshakeMessage(out);
         // Be prepared to decrypt with the new server write key.
         session()->connection()->SetAlternativeDecrypter(
             crypto_negotiated_params_.initial_crypters.decrypter.release(),
@@ skipping 240 matching lines @@
     }
   }
   return false;
 }
 
 QuicClientSessionBase* QuicCryptoClientStream::client_session() {
   return reinterpret_cast<QuicClientSessionBase*>(session());
 }
 
 }  // namespace net