Add EGTests for passwords settings on iOS

ios/chrome/browser/ui/settings/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.
 
 bundle_data("resources") {
   sources = [
     "resources/app_icon_placeholder.png",
     "resources/app_icon_placeholder@2x.png",
     "resources/app_icon_placeholder@3x.png",
     "resources/encryption_error.png",
@@ skipping 291 matching lines @@
     "UIKit.framework",
   ]
 }
 
 source_set("test_support") {
   configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
     "passphrase_collection_view_controller_test.h",
     "passphrase_collection_view_controller_test.mm",
+    "password_details_collection_view_controller_for_testing.h",
     "personal_data_manager_data_changed_observer.cc",
     "personal_data_manager_data_changed_observer.h",
   ]
   deps = [
     ":settings",
     "//base",
     "//components/autofill/core/browser",
     "//components/browser_sync",
     "//components/browser_sync:test_support",
     "//components/keyed_service/core",
@@ skipping 116 matching lines @@
 }
 
 source_set("eg_tests") {
   configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
     "accounts_collection_egtest.mm",
     "autofill_settings_egtest.mm",
     "block_popups_egtest.mm",
     "clear_browsing_data_egtest.mm",
+    "passwords_settings_egtest.mm",
     "settings_egtest.mm",
     "translate_ui_egtest.mm",
   ]
 
   deps = [
     ":settings",
     "//base",
+    "//components/autofill/core/common",
     "//components/browsing_data/core",
     "//components/content_settings/core/browser",
+    "//components/keyed_service/core",
     "//components/metrics",
+    "//components/password_manager/core/browser",
     "//components/password_manager/core/common",
     "//components/prefs",
     "//components/search_engines",
     "//components/signin/core/browser",
     "//components/strings",
     "//ios/chrome/app:app_internal",
     "//ios/chrome/app/strings",
     "//ios/chrome/app/theme",
     "//ios/chrome/browser",
     "//ios/chrome/browser/browser_state",
     "//ios/chrome/browser/content_settings",
+    "//ios/chrome/browser/passwords:passwords",
     "//ios/chrome/browser/search_engines",
     "//ios/chrome/browser/signin",
     "//ios/chrome/browser/ui:ui_internal",
+    "//ios/chrome/browser/ui/settings:test_support",
     "//ios/chrome/browser/ui/tools_menu",
+    "//ios/chrome/browser/ui/util:util",
     "//ios/chrome/test/app:test_support",
     "//ios/chrome/test/earl_grey:test_support",
     "//ios/public/provider/chrome/browser/signin:test_support",
     "//ios/testing/earl_grey:earl_grey_support",
     "//ios/third_party/earl_grey",
     "//ios/web",
     "//ios/web:test_support",
     "//net",
     "//ui/base",
     "//url",
   ]
   libs = [
     "UIKit.framework",
     "XCTest.framework",
   ]
 }