Add SetSupportsQuic method to explicitly specify server that supports QUIC.

components/cronet/android/url_request_context_adapter.cc

 // Copyright 2014 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 "components/cronet/android/url_request_context_adapter.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/single_thread_task_runner.h"
 #include "components/cronet/url_request_context_config.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log_logger.h"
 #include "net/cert/cert_verifier.h"
 #include "net/http/http_auth_handler_factory.h"
 #include "net/http/http_network_layer.h"
-#include "net/http/http_server_properties_impl.h"
+#include "net/http/http_server_properties.h"
 #include "net/proxy/proxy_config_service_fixed.h"
 #include "net/proxy/proxy_service.h"
 #include "net/ssl/ssl_config_service_defaults.h"
 #include "net/url_request/static_http_user_agent_settings.h"
 #include "net/url_request/url_request_context_builder.h"
 #include "net/url_request/url_request_context_storage.h"
 #include "net/url_request/url_request_job_factory_impl.h"
 
 namespace {
 
@@ skipping 110 matching lines @@
     scoped_ptr<URLRequestContextConfig> config) {
   // TODO(mmenke):  Add method to have the builder enable SPDY.
   net::URLRequestContextBuilder context_builder;
   context_builder.set_network_delegate(new BasicNetworkDelegate());
   context_builder.set_proxy_config_service(
       new net::ProxyConfigServiceFixed(net::ProxyConfig()));
   config->ConfigureURLRequestContextBuilder(&context_builder);
 
   context_.reset(context_builder.Build());
 
+  // Currently (circa M39) enabling QUIC requires setting probability threshold.
+  double quic_threshold = config->enable_quic ? 1.0f : 0.0f;
+  context_->http_server_properties()->SetAlternateProtocolProbabilityThreshold(
+      quic_threshold);
+
   if (VLOG_IS_ON(2)) {
     net_log_observer_.reset(new NetLogObserver());
     context_->net_log()->AddThreadSafeObserver(net_log_observer_.get(),
                                                net::NetLog::LOG_ALL_BUT_BYTES);
   }
 
   delegate_->OnContextInitialized(this);
 }
 
 URLRequestContextAdapter::~URLRequestContextAdapter() {
@@ skipping 37 matching lines @@
   net_log_logger_->StartObserving(context_->net_log());
 }
 
 void URLRequestContextAdapter::StopNetLog() {
   if (net_log_logger_) {
     net_log_logger_->StopObserving();
     net_log_logger_.reset();
   }
 }
 
+void URLRequestContextAdapter::SetSupportsQuic(const net::HostPortPair& server,
+                                               uint16 alternate_port,
+                                               double probability) {
+  GetNetworkTaskRunner()->PostTask(
+      FROM_HERE,
+      base::Bind(&net::HttpServerProperties::SetAlternateProtocol,
+                 context_->http_server_properties(),
+                 server,
+                 alternate_port,
+                 net::AlternateProtocol::QUIC,
+                 probability));
+}
+
 void NetLogObserver::OnAddEntry(const net::NetLog::Entry& entry) {
   VLOG(2) << "Net log entry: type=" << entry.type()
           << ", source=" << entry.source().type << ", phase=" << entry.phase();
 }
 
 }  // namespace cronet