[ObjC ARC] Converts ios/web/public/test/http_server:http_server to ARC.

ios/web/public/test/http_server/http_server.h

 // 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.
 
 #ifndef IOS_WEB_PUBLIC_TEST_HTTP_SERVER_HTTP_SERVER_H_
 #define IOS_WEB_PUBLIC_TEST_HTTP_SERVER_HTTP_SERVER_H_
 
 #include <memory>
 #include <vector>
 
-#import "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/lock.h"
 #import "ios/web/public/test/http_server/response_provider.h"
 
 namespace net {
 namespace test_server {
 class EmbeddedTestServer;
 struct HttpRequest;
 }
@@ skipping 114 matching lines @@
   // ResponseProvider response back to EmbeddedTestServer response.
   std::unique_ptr<net::test_server::HttpResponse> GetResponse(
       const net::test_server::HttpRequest& request);
   DISALLOW_COPY_AND_ASSIGN(HttpServer);
 };
 
 }  // namespace test
 }  // namspace web
 
 #endif  // IOS_WEB_PUBLIC_TEST_HTTP_SERVER_HTTP_SERVER_H_