Revert of QUIC - Deleted disable_loading_server_info_for_new_servers field trial.

chrome/browser/io_thread.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 "chrome/browser/io_thread.h"
 
 #include <vector>
 
 #include "base/base64.h"
 #include "base/bind.h"
@@ skipping 1035 matching lines @@
   globals.alternate_protocol_probability_threshold.CopyToIfSet(
       &params->alternate_protocol_probability_threshold);
 
   globals.enable_quic.CopyToIfSet(&params->enable_quic);
   globals.quic_always_require_handshake_confirmation.CopyToIfSet(
       &params->quic_always_require_handshake_confirmation);
   globals.quic_disable_connection_pooling.CopyToIfSet(
       &params->quic_disable_connection_pooling);
   globals.quic_load_server_info_timeout_ms.CopyToIfSet(
       &params->quic_load_server_info_timeout_ms);
+  globals.quic_disable_loading_server_info_for_new_servers.CopyToIfSet(
+      &params->quic_disable_loading_server_info_for_new_servers);
   globals.quic_load_server_info_timeout_srtt_multiplier.CopyToIfSet(
       &params->quic_load_server_info_timeout_srtt_multiplier);
   globals.quic_enable_truncated_connection_ids.CopyToIfSet(
       &params->quic_enable_truncated_connection_ids);
   globals.enable_quic_port_selection.CopyToIfSet(
       &params->enable_quic_port_selection);
   globals.quic_max_packet_length.CopyToIfSet(&params->quic_max_packet_length);
   globals.quic_user_agent_id.CopyToIfSet(&params->quic_user_agent_id);
   globals.quic_supported_versions.CopyToIfSet(
       &params->quic_supported_versions);
@@ skipping 142 matching lines @@
     globals->quic_always_require_handshake_confirmation.set(
         ShouldQuicAlwaysRequireHandshakeConfirmation(quic_trial_params));
     globals->quic_disable_connection_pooling.set(
         ShouldQuicDisableConnectionPooling(quic_trial_params));
     int load_server_info_timeout_ms =
         GetQuicLoadServerInfoTimeout(quic_trial_params);
     if (load_server_info_timeout_ms != 0) {
       globals->quic_load_server_info_timeout_ms.set(
           load_server_info_timeout_ms);
     }
+    globals->quic_disable_loading_server_info_for_new_servers.set(
+        ShouldDisableLoadingServerInfoForNewServers(quic_trial_params));
     float load_server_info_timeout_srtt_multiplier =
         GetQuicLoadServerInfoTimeoutSrttMultiplier(quic_trial_params);
     globals->quic_enable_truncated_connection_ids.set(
         ShouldQuicEnableTruncatedConnectionIds(quic_trial_params));
     if (load_server_info_timeout_srtt_multiplier != 0) {
       globals->quic_load_server_info_timeout_srtt_multiplier.set(
           load_server_info_timeout_srtt_multiplier);
     }
     globals->enable_quic_port_selection.set(
         ShouldEnableQuicPortSelection(command_line));
@@ skipping 146 matching lines @@
   int value;
   if (base::StringToInt(GetVariationParam(quic_trial_params,
                                           "load_server_info_timeout"),
                         &value)) {
     return value;
   }
   return 0;
 }
 
 // static
+bool IOThread::ShouldDisableLoadingServerInfoForNewServers(
+    const VariationParameters& quic_trial_params) {
+  return LowerCaseEqualsASCII(
+      GetVariationParam(quic_trial_params,
+                        "disable_loading_server_info_for_new_servers"),
+      "true");
+}
+
+// static
 float IOThread::GetQuicLoadServerInfoTimeoutSrttMultiplier(
     const VariationParameters& quic_trial_params) {
   double value;
   if (base::StringToDouble(GetVariationParam(quic_trial_params,
                                              "load_server_info_time_to_srtt"),
                            &value)) {
     return (float)value;
   }
   return 0.0f;
 }
@@ skipping 46 matching lines @@
   net::QuicVersionVector supported_versions = net::QuicSupportedVersions();
   for (size_t i = 0; i < supported_versions.size(); ++i) {
     net::QuicVersion version = supported_versions[i];
     if (net::QuicVersionToString(version) == quic_version) {
       return version;
     }
   }
 
   return net::QUIC_VERSION_UNSUPPORTED;
 }