chromeos: Refactor system tray Wi-Fi connect dialog so it works with mash

ash/common/system/tray/system_tray_controller.cc

Index: ash/common/system/tray/system_tray_controller.cc
diff --git a/ash/common/system/tray/system_tray_controller.cc b/ash/common/system/tray/system_tray_controller.cc
index 7b9627711f5c9b5f0e56395776e171926d784a86..d233a4d87ac76682b64198e843cf5fb57158d72c 100644
--- a/ash/common/system/tray/system_tray_controller.cc
+++ b/ash/common/system/tray/system_tray_controller.cc
@@ -77,6 +77,11 @@ void SystemTrayController::ShowPublicAccountInfo() {
     system_tray_client_->ShowPublicAccountInfo();
 }
 
+void SystemTrayController::ShowNetworkConfigure(const std::string& network_id) {
+  if (ConnectToSystemTrayClient())
+    system_tray_client_->ShowNetworkConfigure(network_id);
+}
+
 void SystemTrayController::ShowNetworkSettings(const std::string& network_id) {
   if (ConnectToSystemTrayClient())
     system_tray_client_->ShowNetworkSettings(network_id);