Remove most of the remaining test dependencies (other than chrome/test).

chrome/browser/net/url_request_failed_dns_job.h

-// Copyright (c) 2010 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.
-// This class simulates what wininet does when a dns lookup fails.
-
-#ifndef CHROME_BROWSER_NET_URL_REQUEST_FAILED_DNS_JOB_H_
-#define CHROME_BROWSER_NET_URL_REQUEST_FAILED_DNS_JOB_H_
-#pragma once
-
-#include "base/task.h"
-#include "net/url_request/url_request_job.h"
-
-class URLRequestFailedDnsJob : public net::URLRequestJob {
- public:
-  explicit URLRequestFailedDnsJob(net::URLRequest* request);
-
-  virtual void Start();
-
-  static net::URLRequestJob* Factory(net::URLRequest* request,
-                                     const std::string& scheme);
-
-  // A test URL that can be used in UI tests.
-  static const char kTestUrl[];
-
-  // Adds the testing URLs to the net::URLRequestFilter.
-  static void AddUrlHandler();
-
- private:
-  virtual ~URLRequestFailedDnsJob();
-
-  // Simulate a DNS failure.
-  void StartAsync();
-
-  ScopedRunnableMethodFactory<URLRequestFailedDnsJob> method_factory_;
-};
-
-#endif  // CHROME_BROWSER_NET_URL_REQUEST_FAILED_DNS_JOB_H_