Split up ios/web:test_support.

ios/chrome/test/earl_grey/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.
 
 import("//ios/chrome/test/earl_grey/chrome_ios_eg_test.gni")
 
 group("all_tests") {
   testonly = true
   deps = [
     ":ios_chrome_device_check_egtests",
@@ skipping 165 matching lines @@
     "//ios/chrome/browser/ui/settings:settings",
     "//ios/chrome/browser/ui/static_content",
     "//ios/chrome/browser/ui/toolbar",
     "//ios/chrome/browser/ui/tools_menu",
     "//ios/chrome/test/app:test_support",
     "//ios/testing:ios_test_support",
     "//ios/testing/earl_grey:earl_grey_support",
     "//ios/third_party/material_components_ios",
     "//ios/web",
     "//ios/web:earl_grey_test_support",
-    "//ios/web:test_support",
+    "//ios/web/public/test:test_support",
+    "//ios/web/public/test/response_providers:test_support",
     "//ui/base",
     "//ui/base:test_support",
     "//url",
   ]
 
   public_deps = [
     "//build/config/ios:xctest",
     "//ios/third_party/earl_grey",
+    "//ios/web/public/test/fakes:test_support",
   ]
 
   libs = [
     "OCHamcrest.framework",
     "WebKit.framework",
     "XCTest.framework",
   ]
 }
 
 source_set("hooks") {
   configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
     "eg_tests_hook.mm",
   ]
   deps = [
     "//ios/chrome/app:tests_hook",
   ]
 }