[iOS Clean] Update ContextMenuItem to use a single command.

ios/clean/chrome/browser/ui/context_menu/BUILD.gn

 # 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.
 
 source_set("context_menu") {
   sources = [
     "context_menu_context_impl.h",
     "context_menu_context_impl.mm",
     "context_menu_mediator.h",
     "context_menu_mediator.mm",
@@ skipping 22 matching lines @@
     "context_menu_context.h",
     "context_menu_context.mm",
     "context_menu_item.h",
     "context_menu_item.mm",
     "context_menu_view_controller.h",
     "context_menu_view_controller.mm",
   ]
 
   deps = [
     "//base:base",
+    "//ios/clean/chrome/browser/ui/commands:commands",
   ]
 
   configs += [ "//build/config/compiler:enable_arc" ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "context_menu_mediator_unittest.mm",
   ]
 
   configs += [ "//build/config/compiler:enable_arc" ]
 
   deps = [
     ":context_menu",
     ":context_menu_ui",
     "//base",
     "//base/test:test_support",
     "//ios/chrome/test/base",
     "//ios/web",
     "//ios/web/public/test",
     "//testing/gtest",
   ]
 }