Refactor of LauncherContextMenu.

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

 // Copyright 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/keyboard_ui_service.h"
+#include "chrome/browser/ui/ash/launcher/desktop_shell_launcher_context_menu.h"
 
-KeyboardUIService::KeyboardUIService() {}
-KeyboardUIService::~KeyboardUIService() {}
-
-void KeyboardUIService::Show() {
-  NOTIMPLEMENTED();
+DesktopShellLauncherContextMenu::DesktopShellLauncherContextMenu(
+    ChromeLauncherController* controller,
+    const ash::ShelfItem* item,
+    ash::Shelf* shelf)
+    : LauncherContextMenu(controller, item, shelf) {
+  Init();
 }
 
-void KeyboardUIService::Hide() {
-  NOTIMPLEMENTED();
+DesktopShellLauncherContextMenu::~DesktopShellLauncherContextMenu() {}
+
+void DesktopShellLauncherContextMenu::Init() {
+  AddShelfOptionsMenu();
 }
-
-void KeyboardUIService::AddObserver(
-    keyboard::mojom::KeyboardObserverPtr observer) {
-  NOTIMPLEMENTED();
-}