Create alternative service field trial group.

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 875 matching lines @@
     globals->next_protos.push_back(net::kProtoQUIC1SPDY3);
   }
 
   // No SPDY command-line flags have been specified. Examine trial groups.
   if (spdy_trial_group.starts_with(kSpdyFieldTrialHoldbackGroupNamePrefix)) {
     net::HttpStreamFactory::set_spdy_enabled(false);
     return;
   }
   if (spdy_trial_group.starts_with(kSpdyFieldTrialSpdy31GroupNamePrefix)) {
     globals->next_protos.push_back(net::kProtoSPDY31);
-    globals->use_alternative_services.set(true);
     return;
   }
   if (spdy_trial_group.starts_with(kSpdyFieldTrialSpdy4GroupNamePrefix)) {
     globals->next_protos.push_back(net::kProtoSPDY31);
     globals->next_protos.push_back(net::kProtoHTTP2);
-    globals->use_alternative_services.set(true);
     return;
   }
   if (spdy_trial_group.starts_with(kSpdyFieldTrialParametrizedPrefix)) {
     bool spdy_enabled = false;
     if (base::LowerCaseEqualsASCII(
             GetVariationParam(spdy_trial_params, "enable_spdy31"), "true")) {
       globals->next_protos.push_back(net::kProtoSPDY31);
       spdy_enabled = true;
     }
     if (base::LowerCaseEqualsASCII(
             GetVariationParam(spdy_trial_params, "enable_http2"), "true")) {
       globals->next_protos.push_back(net::kProtoHTTP2);
       spdy_enabled = true;
     }
     // TODO(bnc): HttpStreamFactory::spdy_enabled_ is redundant with
     // globals->next_protos, can it be eliminated?
     net::HttpStreamFactory::set_spdy_enabled(spdy_enabled);
-    globals->use_alternative_services.set(true);
     return;
   }
 
   // By default, enable HTTP/2.
   globals->next_protos.push_back(net::kProtoSPDY31);
   globals->next_protos.push_back(net::kProtoHTTP2);
-  globals->use_alternative_services.set(true);
 }
 
 void IOThread::RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterStringPref(prefs::kAuthSchemes,
                                "basic,digest,ntlm,negotiate");
   registry->RegisterBooleanPref(prefs::kDisableAuthNegotiateCnameLookup, false);
   registry->RegisterBooleanPref(prefs::kEnableAuthNegotiatePort, false);
   registry->RegisterStringPref(prefs::kAuthServerWhitelist, std::string());
   registry->RegisterStringPref(prefs::kAuthNegotiateDelegateWhitelist,
                                std::string());
@@ skipping 218 matching lines @@
           load_server_info_timeout_srtt_multiplier);
     }
     globals->quic_enable_connection_racing.set(
         ShouldQuicEnableConnectionRacing(quic_trial_params));
     globals->quic_enable_non_blocking_io.set(
         ShouldQuicEnableNonBlockingIO(quic_trial_params));
     globals->quic_disable_disk_cache.set(
         ShouldQuicDisableDiskCache(quic_trial_params));
     globals->quic_prefer_aes.set(
         ShouldQuicPreferAes(quic_trial_params));
+    globals->use_alternative_services.set(
+        ShouldQuicEnableAlternativeServices(quic_trial_params));
     int max_number_of_lossy_connections = GetQuicMaxNumberOfLossyConnections(
         quic_trial_params);
     if (max_number_of_lossy_connections != 0) {
       globals->quic_max_number_of_lossy_connections.set(
           max_number_of_lossy_connections);
     }
     float packet_loss_threshold = GetQuicPacketLossThreshold(quic_trial_params);
     if (packet_loss_threshold != 0)
       globals->quic_packet_loss_threshold.set(packet_loss_threshold);
     globals->enable_quic_port_selection.set(
@@ skipping 190 matching lines @@
   return base::LowerCaseEqualsASCII(
       GetVariationParam(quic_trial_params, "disable_disk_cache"), "true");
 }
 
 bool IOThread::ShouldQuicPreferAes(
     const VariationParameters& quic_trial_params) {
   return base::LowerCaseEqualsASCII(
       GetVariationParam(quic_trial_params, "prefer_aes"), "true");
 }
 
+bool IOThread::ShouldQuicEnableAlternativeServices(
+    const VariationParameters& quic_trial_params) {
+  return base::LowerCaseEqualsASCII(
+      GetVariationParam(quic_trial_params, "use_alternative_services"), "true");
+}
+
 int IOThread::GetQuicMaxNumberOfLossyConnections(
     const VariationParameters& quic_trial_params) {
   int value;
   if (base::StringToInt(GetVariationParam(quic_trial_params,
                                           "max_number_of_lossy_connections"),
                         &value)) {
     return value;
   }
   return 0;
 }
@@ skipping 188 matching lines @@
   globals->proxy_script_fetcher_url_request_job_factory = job_factory.Pass();
 
   context->set_job_factory(
       globals->proxy_script_fetcher_url_request_job_factory.get());
 
   // TODO(rtenneti): We should probably use HttpServerPropertiesManager for the
   // system URLRequestContext too. There's no reason this should be tied to a
   // profile.
   return context;
 }