Add kiosk browser tests for network configuration.

chrome/browser/chromeos/login/login_display_host_impl.cc

Index: chrome/browser/chromeos/login/login_display_host_impl.cc
diff --git a/chrome/browser/chromeos/login/login_display_host_impl.cc b/chrome/browser/chromeos/login/login_display_host_impl.cc
index a41c623dd3798d879e3aa772d18bd078b202a5f2..0da39d47aaabd7f3c3132e23e2a7718dff4769cc 100644
--- a/chrome/browser/chromeos/login/login_display_host_impl.cc
+++ b/chrome/browser/chromeos/login/login_display_host_impl.cc
@@ -412,6 +412,10 @@ WizardController* LoginDisplayHostImpl::GetWizardController() {
   return wizard_controller_.get();
 }
 
+AppLaunchController* LoginDisplayHostImpl::GetAppLaunchController() {
+  return app_launch_controller_.get();
+}
+
 void LoginDisplayHostImpl::StartUserAdding(
     const base::Closure& completion_callback) {
   restore_path_ = RESTORE_ADD_USER_INTO_SESSION;