mash: Move LauncherItemController to ash, rename ShelfItemDelegate.

chrome/browser/ui/ash/launcher/launcher_item_controller.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 "chrome/browser/ui/ash/launcher/launcher_item_controller.h"
-
-#include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
-#include "chrome/common/extensions/extension_constants.h"
-
-LauncherItemController::LauncherItemController(
-    const ash::AppLaunchId& app_launch_id,
-    ChromeLauncherController* launcher_controller)
-    : app_launch_id_(app_launch_id),
-      shelf_id_(0),
-      launcher_controller_(launcher_controller),
-      image_set_by_controller_(false) {}
-
-LauncherItemController::~LauncherItemController() {}
-
-MenuItemList LauncherItemController::GetAppMenuItems(int event_flags) {
-  return MenuItemList();
-}
-
-AppWindowLauncherItemController*
-LauncherItemController::AsAppWindowLauncherItemController() {
-  return nullptr;
-}