Refactor web shell integration tests utilities.

ios/web/BUILD.gn

 # Copyright 2015 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.
 
 import("//testing/test.gni")
 import("//ios/web/js_compile.gni")
 
 source_set("web") {
   deps = [
     ":core",
@@ skipping 277 matching lines @@
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/ocmock",
   ]
 
   sources = [
     "public/test/crw_test_js_injection_receiver.h",
     "public/test/crw_test_js_injection_receiver.mm",
     "public/test/http_server.h",
     "public/test/http_server.mm",
+    "public/test/http_server_util.h",
+    "public/test/http_server_util.mm",
     "public/test/js_test_util.h",
     "public/test/js_test_util.mm",
+    "public/test/navigation_test_util.h",
+    "public/test/navigation_test_util.mm",
     "public/test/response_providers/data_response_provider.h",
     "public/test/response_providers/data_response_provider.mm",
     "public/test/response_providers/file_based_response_provider.h",
     "public/test/response_providers/file_based_response_provider.mm",
     "public/test/response_providers/file_based_response_provider_impl.h",
     "public/test/response_providers/file_based_response_provider_impl.mm",
     "public/test/response_providers/html_response_provider.h",
     "public/test/response_providers/html_response_provider.mm",
     "public/test/response_providers/html_response_provider_impl.h",
     "public/test/response_providers/html_response_provider_impl.mm",
@@ skipping 163 matching lines @@
     ":web_bundle",
     ":web_ui_bundle",
   ]
 
   sources = [
     "web_state/js/resources/plugin_placeholder.js",
     "web_state/js/resources/post_request.js",
     "web_state/js/resources/window_id.js",
   ]
 }