mash: Move TrayUpdate to //ash/common

ash/test/ash_test_base.cc

 // Copyright (c) 2012 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/test/ash_test_base.h"
 
 #include <string>
 #include <vector>
 
 #include "ash/ash_switches.h"
@@ skipping 254 matching lines @@
 }
 
 void AshTestBase::RunAllPendingInMessageLoop() {
   ash_test_helper_->RunAllPendingInMessageLoop();
 }
 
 TestScreenshotDelegate* AshTestBase::GetScreenshotDelegate() {
   return ash_test_helper_->test_screenshot_delegate();
 }
 
+SystemTray* AshTestBase::GetPrimarySystemTray() {
+  return Shell::GetInstance()->GetPrimarySystemTray();
+}
+
 TestSystemTrayDelegate* AshTestBase::GetSystemTrayDelegate() {
   return static_cast<TestSystemTrayDelegate*>(
       WmShell::Get()->system_tray_delegate());
 }
 
 void AshTestBase::SetSessionStarted(bool session_started) {
   AshTestHelper::GetTestSessionStateDelegate()->SetActiveUserSessionStarted(
       session_started);
 }
 
@@ skipping 52 matching lines @@
 
 void AshTestBase::DisableIME() {
   Shell::GetInstance()->RemovePreTargetHandler(
       Shell::GetInstance()
           ->window_tree_host_manager()
           ->input_method_event_handler());
 }
 
 }  // namespace test
 }  // namespace ash