[Chromecast] Add proxy server support to chromecast

chromecast/browser/url_request_context_factory.cc

Index: chromecast/browser/url_request_context_factory.cc
diff --git a/chromecast/browser/url_request_context_factory.cc b/chromecast/browser/url_request_context_factory.cc
index 0a250b20a1ab55417b63256e249212bd0eec8bfc..6e00d92723f2ee1189b1afa2581de617050642f3 100644
--- a/chromecast/browser/url_request_context_factory.cc
+++ b/chromecast/browser/url_request_context_factory.cc
@@ -4,6 +4,7 @@
 
 #include "chromecast/browser/url_request_context_factory.h"
 
+#include <algorithm>
 #include <utility>
 
 #include "base/command_line.h"
@@ -12,6 +13,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/threading/worker_pool.h"
 #include "chromecast/base/chromecast_switches.h"
+#include "chromecast/browser/cast_browser_process.h"
 #include "chromecast/browser/cast_http_user_agent_settings.h"
 #include "chromecast/browser/cast_network_delegate.h"
 #include "content/public/browser/browser_context.h"
@@ -30,6 +32,7 @@
 #include "net/http/http_network_layer.h"
 #include "net/http/http_server_properties_impl.h"
 #include "net/http/http_stream_factory.h"
+#include "net/proxy/proxy_config_service_fixed.h"
 #include "net/proxy/proxy_service.h"
 #include "net/ssl/channel_id_service.h"
 #include "net/ssl/default_channel_id_store.h"
@@ -180,12 +183,8 @@ void URLRequestContextFactory::InitializeOnUIThread(net::NetLog* net_log) {
 
   // Proxy config service should be initialized in UI thread, since
   // ProxyConfigServiceDelegate on Android expects UI thread.
-  proxy_config_service_ = net::ProxyService::CreateSystemProxyConfigService(
-      content::BrowserThread::GetTaskRunnerForThread(
-          content::BrowserThread::IO),
-      content::BrowserThread::GetTaskRunnerForThread(
-          content::BrowserThread::FILE));
-
+  proxy_config_service_ = base::MakeUnique<net::ProxyConfigServiceFixed>(
+      *CastBrowserProcess::GetInstance()->proxy_config());
   net_log_ = net_log;
 }