[Chromecast] Add proxy server support to chromecast

chromecast/net/connectivity_checker_impl.cc

Index: chromecast/net/connectivity_checker_impl.cc
diff --git a/chromecast/net/connectivity_checker_impl.cc b/chromecast/net/connectivity_checker_impl.cc
index b1b24eba9dc1f30eb8464738515fa3cab77764d0..9cfd494d8db99a6605000d2cd19e794aec1bc3a9 100644
--- a/chromecast/net/connectivity_checker_impl.cc
+++ b/chromecast/net/connectivity_checker_impl.cc
@@ -58,13 +58,15 @@ const char kMetricNameNetworkConnectivityCheckingErrorType[] =
 }  // namespace
 
 ConnectivityCheckerImpl::ConnectivityCheckerImpl(
-    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner)
+    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
+    net::ProxyConfig& proxy_config)
     : ConnectivityChecker(),
       task_runner_(task_runner),
       connected_(false),
       connection_type_(net::NetworkChangeNotifier::CONNECTION_NONE),
       check_errors_(0),
-      network_changed_pending_(false) {
+      network_changed_pending_(false),
+      proxy_config_(proxy_config) {
   DCHECK(task_runner_.get());
   task_runner->PostTask(FROM_HERE,
                         base::Bind(&ConnectivityCheckerImpl::Initialize, this));
@@ -80,8 +82,7 @@ void ConnectivityCheckerImpl::Initialize() {
 
   net::URLRequestContextBuilder builder;
   builder.set_proxy_config_service(
-      base::MakeUnique<net::ProxyConfigServiceFixed>(
-          net::ProxyConfig::CreateDirect()));
+      base::MakeUnique<net::ProxyConfigServiceFixed>(proxy_config_));
   builder.DisableHttpCache();
   url_request_context_ = builder.Build();