Adds ash_mus_unittests to FYI bot

ash/app_list/app_list_presenter_delegate_unittest.cc

Index: ash/app_list/app_list_presenter_delegate_unittest.cc
diff --git a/ash/app_list/app_list_presenter_delegate_unittest.cc b/ash/app_list/app_list_presenter_delegate_unittest.cc
index 3844f22bbc0a86842e9f78e86f546046466fabcc..1f8b7161b7b5d5506e348df1364ea506273e5333 100644
--- a/ash/app_list/app_list_presenter_delegate_unittest.cc
+++ b/ash/app_list/app_list_presenter_delegate_unittest.cc
@@ -15,10 +15,18 @@
 #include "ui/app_list/views/app_list_view.h"
 #include "ui/aura/test/test_windows.h"
 #include "ui/aura/window.h"
-#include "ui/display/manager/display_manager.h"
+#include "ui/display/display.h"
+#include "ui/display/screen.h"
 #include "ui/events/test/event_generator.h"
 
 namespace ash {
+namespace {
+
+int64_t GetPrimaryDisplayId() {
+  return display::Screen::GetScreen()->GetPrimaryDisplay().id();
+}
+
+}  // namespace
 
 class AppListPresenterDelegateTest : public test::AshTestBase {
  public:
@@ -45,7 +53,7 @@ class AppListPresenterDelegateTest : public test::AshTestBase {
 
 // Tests that app launcher hides when focus moves to a normal window.
 TEST_F(AppListPresenterDelegateTest, HideOnFocusOut) {
-  app_list_presenter_impl()->Show(display_manager()->first_display_id());
+  app_list_presenter_impl()->Show(GetPrimaryDisplayId());
   EXPECT_TRUE(app_list_presenter_impl()->GetTargetVisibility());
 
   std::unique_ptr<aura::Window> window(CreateTestWindowInShellWithId(0));
@@ -58,7 +66,7 @@ TEST_F(AppListPresenterDelegateTest, HideOnFocusOut) {
 // window in kShellWindowId_AppListContainer.
 TEST_F(AppListPresenterDelegateTest,
        RemainVisibleWhenFocusingToApplistContainer) {
-  app_list_presenter_impl()->Show(display_manager()->first_display_id());
+  app_list_presenter_impl()->Show(GetPrimaryDisplayId());
   EXPECT_TRUE(app_list_presenter_impl()->GetTargetVisibility());
 
   aura::Window* applist_container = Shell::GetContainer(
@@ -72,7 +80,7 @@ TEST_F(AppListPresenterDelegateTest,
 
 // Tests that clicking outside the app-list bubble closes it.
 TEST_F(AppListPresenterDelegateTest, ClickOutsideBubbleClosesBubble) {
-  app_list_presenter_impl()->Show(display_manager()->first_display_id());
+  app_list_presenter_impl()->Show(GetPrimaryDisplayId());
   aura::Window* app_window = app_list_presenter_impl()->GetWindow();
   ASSERT_TRUE(app_window);
   ui::test::EventGenerator& generator = GetEventGenerator();
@@ -93,7 +101,7 @@ TEST_F(AppListPresenterDelegateTest, ClickOutsideBubbleClosesBubble) {
 
 // Tests that clicking outside the app-list bubble closes it.
 TEST_F(AppListPresenterDelegateTest, TapOutsideBubbleClosesBubble) {
-  app_list_presenter_impl()->Show(display_manager()->first_display_id());
+  app_list_presenter_impl()->Show(GetPrimaryDisplayId());
 
   aura::Window* app_window = app_list_presenter_impl()->GetWindow();
   ASSERT_TRUE(app_window);
@@ -140,7 +148,7 @@ TEST_F(AppListPresenterDelegateTest, TinyDisplay) {
   // Set up a screen with a tiny display (height smaller than the app list).
   UpdateDisplay("400x300");
 
-  app_list_presenter_impl()->Show(display_manager()->first_display_id());
+  app_list_presenter_impl()->Show(GetPrimaryDisplayId());
   EXPECT_TRUE(app_list_presenter_impl()->GetTargetVisibility());
 
   // The top of the app list should be on-screen (even if the bottom is not).