chromeos: Rename ash::WmShelf to Shelf

ash/focus_cycler_unittest.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/focus_cycler.h"
 
 #include <memory>
 
+#include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_widget.h"
-#include "ash/shelf/wm_shelf.h"
 #include "ash/shell.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/status_area_widget_delegate.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/window_util.h"
 #include "ui/aura/test/test_windows.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/events/test/event_generator.h"
@@ skipping 376 matching lines @@
   // Cycle focus to the shelf.
   Shell::Get()->focus_cycler()->RotateFocus(FocusCycler::FORWARD);
 
   // Cycle focus should go back to the browser.
   Shell::Get()->focus_cycler()->RotateFocus(FocusCycler::FORWARD);
   EXPECT_TRUE(wm::IsActiveWindow(window.get()));
 }
 
 }  // namespace test
 }  // namespace ash