Update some host_resolver()->AddRules in chrome/browser.

chrome/browser/extensions/extension_with_management_policy_apitest.cc

 // Copyright 2017 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.
 
 #include "chrome/browser/extensions/extension_with_management_policy_apitest.h"
 #include "components/policy/core/browser/browser_policy_connector.h"
+#include "net/dns/mock_host_resolver.h"
 #include "net/test/embedded_test_server/http_request.h"
 
 ExtensionApiTestWithManagementPolicy::ExtensionApiTestWithManagementPolicy()
     : ExtensionApiTest() {}
 
 ExtensionApiTestWithManagementPolicy::~ExtensionApiTestWithManagementPolicy() {}
 
 void ExtensionApiTestWithManagementPolicy::SetUpInProcessBrowserTestFixture() {
   ExtensionApiTest::SetUpInProcessBrowserTestFixture();
   EXPECT_CALL(policy_provider_, IsInitializationComplete(testing::_))
       .WillRepeatedly(testing::Return(true));
   policy_provider_.SetAutoRefresh();
   policy::BrowserPolicyConnector::SetPolicyProviderForTesting(
       &policy_provider_);
 }
+
+void ExtensionApiTestWithManagementPolicy::SetUpOnMainThread() {
+  ExtensionApiTest::SetUpOnMainThread();
+  host_resolver()->AddRule("*", "127.0.0.1");
+}