chromeos: Rename ash::WmShelf to Shelf

ash/shelf/shelf_unittest.cc

 // Copyright 2013 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 <utility>
 
+#include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_button.h"
 #include "ash/shelf/shelf_model.h"
 #include "ash/shelf/shelf_view.h"
 #include "ash/shelf/shelf_widget.h"
-#include "ash/shelf/wm_shelf.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/shelf_view_test_api.h"
 #include "base/strings/string_number_conversions.h"
 
 namespace ash {
 
 class ShelfTest : public test::AshTestBase {
  public:
   ShelfTest() : shelf_model_(nullptr) {}
 
@@ skipping 82 matching lines @@
   // Remove one of the first items in the main shelf view.
   ASSERT_GT(shelf_model()->item_count(), 1);
   shelf_model()->RemoveItemAt(1);
 
   // Waits for all transitions to finish and there should be no crash.
   test_api()->RunMessageLoopUntilAnimationsDone();
   EXPECT_FALSE(shelf_widget->IsShowingOverflowBubble());
 }
 
 }  // namespace ash