[iOS/GN] Fix compilation of ios_chrome_unittests with gn.

components/policy/core/browser/BUILD.gn

 # Copyright 2014 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("//build/config/features.gni")
 
 # GYP version: components/policy.gypi:policy_component_core_browser
 source_set("browser") {
   visibility = [ "//components/policy/*" ]
   sources = [
     # Note that these sources are always included, even for builds that disable
     # policy. Most source files should go in the conditional sources list
     # below. url_blacklist_manager.h is used by managed mode.
     "url_blacklist_manager.cc",
     "url_blacklist_manager.h",
   ]
 
   defines = [ "POLICY_COMPONENT_IMPLEMENTATION" ]
 
   deps = [
     "//base",
     "//base/third_party/dynamic_annotations",
     "//components/bookmarks/managed",
     "//components/keyed_service/core",
     "//components/policy/core/common",
     "//components/pref_registry",
     "//components/prefs",
     "//components/strings",
     "//components/url_matcher",
+    "//net",
     "//ui/base",
   ]
 
   if (is_android) {
     sources += [
       "android/android_combined_policy_provider.cc",
       "android/android_combined_policy_provider.h",
       "android/component_jni_registrar.cc",
       "android/component_jni_registrar.h",
       "android/policy_converter.cc",
@@ skipping 62 matching lines @@
       "//components/prefs:test_support",
       "//components/proxy_config",
       "//components/url_formatter",
       "//google_apis",
       "//net",
       "//testing/gmock",
       "//testing/gtest",
     ]
   }
 }