chromeos: Introduce ash::SystemTrayTestApi

chrome/browser/ui/ash/system_tray_tray_cast_browsertest_media_router_chromeos.cc

 // Copyright 2015 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 <vector>
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
+#include "ash/system/tray/system_tray_test_api.h"
 #include "ash/test/tray_cast_test_api.h"
 #include "base/macros.h"
 #include "chrome/browser/media/router/media_routes_observer.h"
 #include "chrome/browser/media/router/media_sinks_observer.h"
 #include "chrome/browser/media/router/mock_media_router.h"
 #include "chrome/browser/ui/ash/cast_config_client_media_router.h"
 #include "chrome/common/media_router/media_source_helper.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "content/public/test/test_utils.h"
 #include "url/gurl.h"
@@ skipping 19 matching lines @@
 }
 
 // Returns the cast tray instance.
 ash::TrayCast* GetTrayCast() {
   ash::SystemTray* tray = ash::Shell::Get()->GetPrimarySystemTray();
 
   // Make sure we actually popup the tray, otherwise the TrayCast instance will
   // not be created.
   tray->ShowDefaultView(ash::BubbleCreationType::BUBBLE_CREATE_NEW);
 
-  return tray->GetTrayCastForTesting();
+  return ash::SystemTrayTestApi(tray).tray_cast();
 }
 
 class SystemTrayTrayCastMediaRouterChromeOSTest : public InProcessBrowserTest {
  protected:
   SystemTrayTrayCastMediaRouterChromeOSTest() : InProcessBrowserTest() {}
   ~SystemTrayTrayCastMediaRouterChromeOSTest() override {}
 
   media_router::MediaSinksObserver* media_sinks_observer() const {
     DCHECK(media_sinks_observer_);
     return media_sinks_observer_;
@@ skipping 124 matching lines @@
   EXPECT_TRUE(test_api.IsTrayCastViewVisible());
   EXPECT_EQ("local_route", test_api.GetDisplayedCastId());
 
   // When a casting session stops, we shouldn't display the cast view.
   test_api.OnCastingSessionStartedOrStopped(false /*is_casting*/);
   media_routes_observer()->OnRoutesUpdated(
       no_routes, std::vector<media_router::MediaRoute::Id>());
   content::RunAllPendingInMessageLoop();
   EXPECT_FALSE(test_api.IsTrayCastViewVisible());
 }