Split up ios/web:test_support.

ios/web/public/test/http_server_util.h

-// 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.
-
-#ifndef IOS_WEB_PUBLIC_TEST_HTTP_SERVER_UTIL_H_
-#define IOS_WEB_PUBLIC_TEST_HTTP_SERVER_UTIL_H_
-
-#include <map>
-
-#include "url/gurl.h"
-
-namespace web {
-
-class ResponseProvider;
-
-namespace test {
-
-// Sets up a web::test::HttpServer with a simple HtmlResponseProvider. The
-// HtmlResponseProvider will use the |responses| map to resolve URLs.
-void SetUpSimpleHttpServer(const std::map<GURL, std::string>& responses);
-
-// Sets up a web::test::HttpServer with a simple HtmlResponseProvider. The
-// HtmlResponseProvider will use the |responses| map to resolve URLs. The value
-// of |responses| is the cookie and response body pair where the first string is
-// the cookie and the second string is the response body. Set the cookie string
-// as empty string if cookie is not needed in the response headers.
-void SetUpSimpleHttpServerWithSetCookies(
-    const std::map<GURL, std::pair<std::string, std::string>>& responses);
-
-// Sets up a web::test::HttpServer with a FileBasedResponseProvider. The
-// server will try to resolve URLs as file paths relative to the application
-// bundle path. web::test::MakeUrl should be used to rewrite URLs before doing
-// a request.
-void SetUpFileBasedHttpServer();
-
-// Sets up a web::test::HttpServer with a single custom provider.
-// Takes ownership of the provider.
-void SetUpHttpServer(std::unique_ptr<web::ResponseProvider> provider);
-
-// Adds a single custom provider.
-// Takes ownership of the provider.
-void AddResponseProvider(std::unique_ptr<web::ResponseProvider> provider);
-}  // namespace test
-}  // namespace web
-
-#endif  // IOS_WEB_PUBLIC_TEST_HTTP_SERVER_UTIL_H_