Don't dismiss Settings when another view controller is presented on top

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 328 matching lines @@
     ":settings",
     "//base",
     "//components/browsing_data/core",
     "//components/content_settings/core/browser",
     "//components/metrics",
     "//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/search_engines",
     "//ios/chrome/browser/signin",
+    "//ios/chrome/browser/ui:ui_internal",
     "//ios/chrome/browser/ui/tools_menu",
     "//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",
   ]
 }