Add remoting::UrlRequest interface with 2 implementations

remoting/base/chromium_url_request.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 REMOTING_BASE_CHROMIUM_URL_REQUEST_H_
+#define REMOTING_BASE_CHROMIUM_URL_REQUEST_H_
+
+#include <string>
+
+#include "base/callback.h"
+#include "base/memory/ref_counted.h"
+#include "net/url_request/url_fetcher_delegate.h"
+#include "remoting/base/url_request.h"
+
+namespace net {
+class URLRequestContextGetter;
+}  // namespace net
+
+namespace remoting {
+
+// UrlRequest implementation based on net::URLFetcher.
+class ChromiumUrlRequest : public UrlRequest, public net::URLFetcherDelegate {
+ public:
+  ChromiumUrlRequest(scoped_refptr<net::URLRequestContextGetter> url_context,
+                     const std::string& url);
+  ~ChromiumUrlRequest() override;
+
+  // UrlRequest interface.
+  void AddHeader(const std::string& value) override;
+  void Start(const OnResultCallback& on_result_callback) override;
+
+ private:
+  // net::URLFetcherDelegate interface.
+  void OnURLFetchComplete(const net::URLFetcher* url_fetcher) override;
+
+  scoped_ptr<net::URLFetcher> url_fetcher_;
+  OnResultCallback on_result_callback_;
+};
+
+class ChromiumUrlRequestFactory : public UrlRequestFactory {
+ public:
+  ChromiumUrlRequestFactory(
+      scoped_refptr<net::URLRequestContextGetter> url_context);
+  ~ChromiumUrlRequestFactory() override;
+
+  // UrlRequestFactory interface.
+  scoped_ptr<UrlRequest> CreateUrlRequest(const std::string& url) override;
+
+ private:
+  scoped_refptr<net::URLRequestContextGetter> url_context_;
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_BASE_CHROMIUM_URL_REQUEST_H_