Implement request mobile site.

ios/chrome/browser/ui/tools_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("tools_menu") {
   sources = [
     "reading_list_menu_view_item.h",
     "reading_list_menu_view_item.mm",
     "tools_menu_configuration.h",
     "tools_menu_configuration.mm",
@@ skipping 49 matching lines @@
     "//ios/chrome/browser/ui/commands:commands",
     "//ios/web:user_agent",
     "//testing/gtest",
   ]
 }
 
 source_set("eg_tests") {
   configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
+    "request_desktop_mobile_site_egtest.mm",
     "tools_popup_menu_egtest.mm",
   ]
   deps = [
     ":tools_menu",
     "//base",
     "//components/strings",
     "//ios/chrome/app/strings",
     "//ios/chrome/browser/ui",
     "//ios/chrome/browser/ui:ui_internal",
     "//ios/chrome/browser/ui/toolbar",
     "//ios/chrome/test/earl_grey:test_support",
     "//ios/third_party/earl_grey",
     "//ios/web:test_support",
     "//ui/base",
   ]
   libs = [ "XCTest.framework" ]
 }