[ios clean] Toolbar accessibility and showcase egtests

ios/showcase/toolbar/BUILD.gn

 # Copyright 2017 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("toolbar") {
   sources = [
     "sc_toolbar_coordinator.h",
     "sc_toolbar_coordinator.mm",
   ]
   deps = [
     "//ios/clean/chrome/browser/ui/commands",
     "//ios/clean/chrome/browser/ui/toolbar:toolbar_ui",
     "//ios/showcase/common",
   ]
   libs = [ "UIKit.framework" ]
   configs += [ "//build/config/compiler:enable_arc" ]
 }
+
+source_set("eg_tests") {
+  testonly = true
+  sources = [
+    "sc_toolbar_egtest.mm",
+  ]
+  deps = [
+    "//components/strings",
+    "//ios/chrome/app/strings",
+    "//ios/chrome/browser/ui",
+    "//ios/chrome/test/earl_grey:test_support",
+    "//ios/showcase/test",
+    "//ios/third_party/earl_grey",
+    "//ui/base",
+  ]
+  configs += [ "//build/config/compiler:enable_arc" ]
+}