mash: Prerequisites for removing ShelfDelegate.

ash/wm/workspace_controller_unittest.cc

Index: ash/wm/workspace_controller_unittest.cc
diff --git a/ash/wm/workspace_controller_unittest.cc b/ash/wm/workspace_controller_unittest.cc
index b2f18e21c06f6247d88729c7d8ed5c1b5d4a7c0c..1b53e6f279672ba0f6523d6cbc527b3e4bab4ea6 100644
--- a/ash/wm/workspace_controller_unittest.cc
+++ b/ash/wm/workspace_controller_unittest.cc
@@ -16,7 +16,6 @@
 #include "ash/system/status_area_widget.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/shell_test_api.h"
-#include "ash/test/test_shelf_delegate.h"
 #include "ash/wm/panels/panel_layout_manager.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_state_aura.h"
@@ -120,7 +119,6 @@ class WorkspaceControllerTest : public test::AshTestBase {
     aura::Window* window = CreateTestWindowInShellWithDelegateAndType(
         delegate, ui::wm::WINDOW_TYPE_PANEL, 0, bounds);
     WmWindow* wm_window = WmWindow::Get(window);
-    test::TestShelfDelegate::instance()->AddShelfItem(wm_window);
     PanelLayoutManager::Get(wm_window)->Relayout();
     return window;
   }