Arc app integration in shelf launcher context menu

chrome/browser/ui/ash/launcher/desktop_shell_launcher_context_menu.cc

+// Copyright (c) 2016 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/desktop_shell_launcher_context_menu.h"
+
+#include <string>
+
+#include "ash/desktop_background/user_wallpaper_delegate.h"
+#include "ash/shelf/shelf.h"
+#include "ash/shelf/shelf_item_types.h"
+#include "ash/shell.h"
+#include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
+
+DesktopShellLauncherContextMenu::DesktopShellLauncherContextMenu(
+    ChromeLauncherController* controller,
+    const ash::ShelfItem* item,
+    ash::Shelf* shelf)
+    : LauncherContextMenu(controller, item, shelf) {
+  Init();
+}
+
+DesktopShellLauncherContextMenu::~DesktopShellLauncherContextMenu() {}
+
+void DesktopShellLauncherContextMenu::Init() {
+  AddAutohideAlignmentWallpaperMenu();
+}
+
+bool DesktopShellLauncherContextMenu::IsCommandIdEnabled(int command_id) const {
+  switch (command_id) {
+    case MENU_CHANGE_WALLPAPER:
+      return ash::Shell::GetInstance()
+          ->user_wallpaper_delegate()
+          ->CanOpenSetWallpaperPage();
+    case MENU_AUTO_HIDE:
+      return CanUserModifyShelfAutoHideBehavior();
+    case MENU_ALIGNMENT_MENU:
+      return true;
+    default:
+      NOTREACHED();
+      return false;
+  }
+}