[Cronet] Add QUIC experimental params

net/url_request/url_request_context_builder.cc

Index: net/url_request/url_request_context_builder.cc
diff --git a/net/url_request/url_request_context_builder.cc b/net/url_request/url_request_context_builder.cc
index 15cb16a0e5dfa292f40a1da5e9032570086bfc9b..a2eefd8e7d43a77f7996fe8be01b409c788cd738 100644
--- a/net/url_request/url_request_context_builder.cc
+++ b/net/url_request/url_request_context_builder.cc
@@ -177,7 +177,11 @@ URLRequestContextBuilder::HttpNetworkSessionParams::HttpNetworkSessionParams()
       testing_fixed_https_port(0),
       next_protos(NextProtosDefaults()),
       use_alternative_services(true),
-      enable_quic(false) {}
+      enable_quic(false),
+      quic_store_server_configs_in_properties(false),
+      quic_delay_tcp_race(false),
+      quic_max_number_of_lossy_connections(0),
+      quic_packet_loss_threshold(1.0f) {}
 
 URLRequestContextBuilder::HttpNetworkSessionParams::~HttpNetworkSessionParams()
 {}
@@ -389,6 +393,14 @@ scoped_ptr<URLRequestContext> URLRequestContextBuilder::Build() {
       http_network_session_params_.trusted_spdy_proxy;
   network_session_params.next_protos = http_network_session_params_.next_protos;
   network_session_params.enable_quic = http_network_session_params_.enable_quic;
+  network_session_params.quic_store_server_configs_in_properties =
+      http_network_session_params_.quic_store_server_configs_in_properties;
+  network_session_params.quic_delay_tcp_race =
+      http_network_session_params_.quic_delay_tcp_race;
+  network_session_params.quic_max_number_of_lossy_connections =
+      http_network_session_params_.quic_max_number_of_lossy_connections;
+  network_session_params.quic_packet_loss_threshold =
+      http_network_session_params_.quic_packet_loss_threshold;
   network_session_params.quic_connection_options =
       http_network_session_params_.quic_connection_options;
   network_session_params.ssl_session_cache_shard =