chromeos: Refactor system tray ShowNetworkSettingsForGuid for mash

chrome/browser/ui/ash/network_connect_delegate_chromeos.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/ash/network_connect_delegate_chromeos.h"
 
 #include "ash/common/login_status.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/system/tray/system_tray_delegate.h"
 #include "ash/common/wm_shell.h"
 #include "ash/shell.h"
 #include "chrome/browser/chromeos/enrollment_dialog_view.h"
 #include "chrome/browser/chromeos/options/network_config_view.h"
 #include "chrome/browser/chromeos/sim_dialog_delegate.h"
+#include "chrome/browser/ui/ash/system_tray_client.h"
 #include "chrome/browser/ui/webui/chromeos/mobile_setup_dialog.h"
 
 namespace {
 
 bool IsUIAvailable() {
   return ash::WmShell::HasInstance() &&
          !ash::WmShell::Get()->GetSessionStateDelegate()->IsScreenLocked();
 }
 
 gfx::NativeWindow GetNativeWindow() {
@@ skipping 28 matching lines @@
     const std::string& network_id) {
   if (!IsUIAvailable())
     return;
   NetworkConfigView::Show(network_id, GetNativeWindow());
 }
 
 void NetworkConnectDelegateChromeOS::ShowNetworkSettingsForGuid(
     const std::string& network_id) {
   if (!IsUIAvailable())
     return;
-  ash::WmShell::Get()->system_tray_delegate()->ShowNetworkSettingsForGuid(
-      network_id);
+  SystemTrayClient::Get()->ShowNetworkSettings(network_id);
 }
 
 bool NetworkConnectDelegateChromeOS::ShowEnrollNetwork(
     const std::string& network_id) {
   if (!IsUIAvailable())
     return false;
   return enrollment::CreateDialog(network_id, GetNativeWindow());
 }
 
 void NetworkConnectDelegateChromeOS::ShowMobileSimDialog() {
   if (!IsUIAvailable())
     return;
   SimDialogDelegate::ShowDialog(GetNativeWindow(),
                                 SimDialogDelegate::SIM_DIALOG_UNLOCK);
 }
 
 void NetworkConnectDelegateChromeOS::ShowMobileSetupDialog(
     const std::string& service_path) {
   if (!IsUIAvailable())
     return;
   MobileSetupDialog::Show(service_path);
 }
 
 }  // namespace chromeos