mash: Prerequisites for removing ShelfDelegate.

ash/wm/overview/window_selector_unittest.cc

Index: ash/wm/overview/window_selector_unittest.cc
diff --git a/ash/wm/overview/window_selector_unittest.cc b/ash/wm/overview/window_selector_unittest.cc
index 3548346f0b014add1ac7a9b17f69ed884332f34f..892bcd4bfee1405751e8ecaad77aab6053d4065f 100644
--- a/ash/wm/overview/window_selector_unittest.cc
+++ b/ash/wm/overview/window_selector_unittest.cc
@@ -16,7 +16,6 @@
 #include "ash/test/shelf_view_test_api.h"
 #include "ash/test/shell_test_api.h"
 #include "ash/test/test_app_list_view_presenter_impl.h"
-#include "ash/test/test_shelf_delegate.h"
 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/wm/overview/window_grid.h"
 #include "ash/wm/overview/window_selector.h"
@@ -147,7 +146,6 @@ class WindowSelectorTest : public test::AshTestBase {
     aura::Window* window = CreateTestWindowInShellWithDelegateAndType(
         nullptr, ui::wm::WINDOW_TYPE_PANEL, 0, bounds);
     window->SetProperty(aura::client::kTopViewInset, kHeaderHeight);
-    test::TestShelfDelegate::instance()->AddShelfItem(WmWindow::Get(window));
     shelf_view_test()->RunMessageLoopUntilAnimationsDone();
     return window;
   }