Remove |parse_alternative_service| flag.

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 8ec5bedd0cfdfab4b9f069ec95e0cbb73b9a8e3f..edbca15f96b577560041462c57db7494f57d517c 100644
--- a/net/url_request/url_request_context_builder.cc
+++ b/net/url_request/url_request_context_builder.cc
@@ -182,7 +182,6 @@ URLRequestContextBuilder::HttpNetworkSessionParams::HttpNetworkSessionParams()
       testing_fixed_https_port(0),
       enable_spdy31(false),
       enable_http2(true),
-      parse_alternative_services(true),
       enable_alternative_service_with_different_host(true),
       enable_quic(false),
       quic_max_server_configs_stored_in_properties(0),
@@ -412,8 +411,6 @@ std::unique_ptr<URLRequestContext> URLRequestContextBuilder::Build() {
       http_network_session_params_.enable_spdy31;
   network_session_params.enable_http2 =
       http_network_session_params_.enable_http2;
-  network_session_params.parse_alternative_services =
-      http_network_session_params_.parse_alternative_services;
   network_session_params.enable_alternative_service_with_different_host =
       http_network_session_params_
           .enable_alternative_service_with_different_host;