chromeos: Rename ash::WmShelf to Shelf

ash/wm/workspace/workspace_layout_manager_keyboard_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/wm/workspace/workspace_layout_manager.h"
 
 #include <string>
 #include <utility>
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/root_window_controller.h"
 #include "ash/session/session_state_delegate.h"
+#include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_layout_manager.h"
-#include "ash/shelf/wm_shelf.h"
 #include "ash/shell.h"
 #include "ash/shell_observer.h"
 #include "ash/shell_port.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/fullscreen_window_finder.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm/wm_event.h"
 #include "ash/wm/workspace/workspace_window_resizer.h"
 #include "ash/wm_window.h"
@@ skipping 169 matching lines @@
   changed_window_bounds.Offset(0, -shift);
   // Window should be shifted up.
   EXPECT_EQ(changed_window_bounds, window->bounds());
 
   kb_controller->HideKeyboard(
       keyboard::KeyboardController::HIDE_REASON_AUTOMATIC);
   EXPECT_EQ(orig_window_bounds, window->bounds());
 }
 
 }  // namespace ash