Refactor LauncherDelegate

ash/shell/launcher_delegate_impl.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/shell/launcher_delegate_impl.h"
 
+#include "ash/launcher/launcher_item_delegate_manager.h"
 #include "ash/launcher/launcher_util.h"
+#include "ash/shell.h"
 #include "ash/shell/toplevel_window.h"
 #include "ash/shell/window_watcher.h"
 #include "ash/wm/window_util.h"
 #include "base/strings/string_util.h"
 #include "grit/ash_resources.h"
 #include "ui/aura/window.h"
 
 namespace ash {
 namespace shell {
 
 LauncherDelegateImpl::LauncherDelegateImpl(WindowWatcher* watcher)
     : watcher_(watcher) {
+  ash::LauncherItemDelegateManager* manager =
+      ash::Shell::GetInstance()->launcher_item_delegate_manager();
+  manager->RegisterLauncherItemDelegate(ash::TYPE_TABBED, this);
+  manager->RegisterLauncherItemDelegate(ash::TYPE_APP_PANEL, this);
 }
 
 LauncherDelegateImpl::~LauncherDelegateImpl() {
+  ash::LauncherItemDelegateManager* manager =
+      ash::Shell::GetInstance()->launcher_item_delegate_manager();
+  manager->UnregisterLauncherItemDelegate(ash::TYPE_TABBED);
+  manager->UnregisterLauncherItemDelegate(ash::TYPE_APP_PANEL);
 }
 
 void LauncherDelegateImpl::ItemSelected(const ash::LauncherItem& item,
                                        const ui::Event& event) {
   aura::Window* window = watcher_->GetWindowByID(item.id);
   if (window->type() == aura::client::WINDOW_TYPE_PANEL)
     ash::wm::MoveWindowToEventRoot(window, event);
   window->Show();
   ash::wm::ActivateWindow(window);
 }
@@ skipping 46 matching lines @@
 
 bool LauncherDelegateImpl::IsAppPinned(const std::string& app_id) {
   return false;
 }
 
 void LauncherDelegateImpl::UnpinAppWithID(const std::string& app_id) {
 }
 
 }  // namespace shell
 }  // namespace ash