mash: Remove ShelfDelegate; move functions to ShelfModel.

ash/test/test_shelf_item_delegate.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 "ash/test/test_shelf_item_delegate.h"
-
-#include "ash/wm/window_util.h"
-#include "ash/wm_window.h"
-
-namespace ash {
-namespace test {
-
-TestShelfItemDelegate::TestShelfItemDelegate(WmWindow* window)
-    : ShelfItemDelegate(AppLaunchId()), window_(window) {}
-
-TestShelfItemDelegate::~TestShelfItemDelegate() {}
-
-void TestShelfItemDelegate::ItemSelected(std::unique_ptr<ui::Event> event,
-                                         int64_t display_id,
-                                         ShelfLaunchSource source,
-                                         const ItemSelectedCallback& callback) {
-  if (window_) {
-    if (window_->GetType() == ui::wm::WINDOW_TYPE_PANEL)
-      wm::MoveWindowToDisplay(window_->aura_window(), display_id);
-    window_->Show();
-    window_->Activate();
-    callback.Run(SHELF_ACTION_WINDOW_ACTIVATED, base::nullopt);
-    return;
-  }
-  callback.Run(SHELF_ACTION_NONE, base::nullopt);
-}
-
-void TestShelfItemDelegate::ExecuteCommand(uint32_t command_id,
-                                           int32_t event_flags) {
-  // This delegate does not support showing an application menu.
-  NOTIMPLEMENTED();
-}
-
-void TestShelfItemDelegate::Close() {}
-
-}  // namespace test
-}  // namespace ash