[Device Discovery] Move files from browser/extensions/api/dial to browser/media/router/discovery/di…

chrome/browser/media/router/discovery/dial/device_description_fetcher.h

 // Copyright (c) 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.
 
-#ifndef CHROME_BROWSER_EXTENSIONS_API_DIAL_DEVICE_DESCRIPTION_FETCHER_H_
-#define CHROME_BROWSER_EXTENSIONS_API_DIAL_DEVICE_DESCRIPTION_FETCHER_H_
+#ifndef CHROME_BROWSER_MEDIA_ROUTER_DISCOVERY_DIAL_DEVICE_DESCRIPTION_FETCHER_H_
+#define CHROME_BROWSER_MEDIA_ROUTER_DISCOVERY_DIAL_DEVICE_DESCRIPTION_FETCHER_H_
 
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/threading/thread_checker.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "url/gurl.h"
 
 namespace net {
 class URLFetcher;
 class URLRequestContextGetter;
 }
 
-namespace extensions {
-namespace api {
-namespace dial {
+namespace media_router {
 
 struct DialDeviceDescriptionData;
 
 // Used to make a single HTTP GET request with |device_description_url| to fetch
 // a uPnP device description from a DIAL device.  If successful, |success_cb| is
 // invoked with the result; otherwise, |error_cb| is invoked with an error
 // reason.
 // This class is not thread safe.
 class DeviceDescriptionFetcher : public net::URLFetcherDelegate {
  public:
@@ skipping 28 matching lines @@
 
   const GURL device_description_url_;
   const scoped_refptr<net::URLRequestContextGetter> request_context_;
   base::ThreadChecker thread_checker_;
 
   base::OnceCallback<void(const DialDeviceDescriptionData&)> success_cb_;
   base::OnceCallback<void(const std::string&)> error_cb_;
   std::unique_ptr<net::URLFetcher> fetcher_;
 };
 
-}  // namespace dial
-}  // namespace api
-}  // namespace extensions
+}  // namespace media_router
 
-#endif  // CHROME_BROWSER_EXTENSIONS_API_DIAL_DEVICE_DESCRIPTION_FETCHER_H_
+#endif  // CHROME_BROWSER_MEDIA_ROUTER_DISCOVERY_DIAL_DEVICE_DESCRIPTION_FETCHER_H_