Add a method to override the network conditions of the ChromeDriver session.

chrome/test/chromedriver/chrome/chrome_desktop_impl.cc

Index: chrome/test/chromedriver/chrome/chrome_desktop_impl.cc
diff --git a/chrome/test/chromedriver/chrome/chrome_desktop_impl.cc b/chrome/test/chromedriver/chrome/chrome_desktop_impl.cc
index 30ab4213fba69ec2234e1035e1c0dfc75b7be6f8..d0eb5e2f3d3e562e2bc7c06110d0cd8e3ab7e66d 100644
--- a/chrome/test/chromedriver/chrome/chrome_desktop_impl.cc
+++ b/chrome/test/chromedriver/chrome/chrome_desktop_impl.cc
@@ -201,3 +201,12 @@ Status ChromeDesktopImpl::QuitImpl() {
 const base::CommandLine& ChromeDesktopImpl::command() const {
   return command_;
 }
+
+int ChromeDesktopImpl::GetNetworkConnection() const {
+  return network_connection_;
+}
+
+void ChromeDesktopImpl::SetNetworkConnection(
+    int network_connection) {
+  network_connection_ = network_connection;
+}