mash: Migrate ShowSetTimeDialog from SystemTrayDelegate to mojo

ash/common/system/tray/system_tray_controller.cc

 // Copyright 2016 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 "ash/common/system/tray/system_tray_controller.h"
 
 #include "ash/common/system/tray/system_tray_notifier.h"
 #include "ash/common/wm_shell.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 10 matching lines @@
 void SystemTrayController::ShowSettings() {
   if (ConnectToSystemTrayClient())
     system_tray_client_->ShowSettings();
 }
 
 void SystemTrayController::ShowDateSettings() {
   if (ConnectToSystemTrayClient())
     system_tray_client_->ShowDateSettings();
 }
 
+void SystemTrayController::ShowSetTimeDialog() {
+  if (ConnectToSystemTrayClient())
+    system_tray_client_->ShowSetTimeDialog();
+}
+
 void SystemTrayController::ShowDisplaySettings() {
   if (ConnectToSystemTrayClient())
     system_tray_client_->ShowDisplaySettings();
 }
 
 void SystemTrayController::ShowPowerSettings() {
   if (ConnectToSystemTrayClient())
     system_tray_client_->ShowPowerSettings();
 }
 
@@ skipping 84 matching lines @@
 void SystemTrayController::OnClientConnectionError() {
   system_tray_client_.reset();
 }
 
 void SystemTrayController::SetUse24HourClock(bool use_24_hour) {
   hour_clock_type_ = use_24_hour ? base::k24HourClock : base::k12HourClock;
   WmShell::Get()->system_tray_notifier()->NotifyDateFormatChanged();
 }
 
 }  // namespace ash