remoting: Cleanup class/struct fwd declarations

remoting/test/remote_host_info_fetcher.h

 // Copyright 2015 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_TEST_REMOTE_HOST_INFO_FETCHER_H_
 #define REMOTING_TEST_REMOTE_HOST_INFO_FETCHER_H_
 
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "remoting/test/app_remoting_service_urls.h"
 #include "remoting/test/remote_host_info.h"
 
-namespace net {
-class UrlFetcher;
-}
 namespace remoting {
 class URLRequestContextGetter;
 }
 
 namespace remoting {
 namespace test {
 
 // Supplied by the client for each remote host info request and returns a valid,
 // initialized RemoteHostInfo object on success.
 typedef base::Callback<void(const RemoteHostInfo& remote_host_info)>
@@ skipping 29 matching lines @@
   // Caller-supplied callback used to return remote host info on success.
   RemoteHostInfoCallback remote_host_info_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(RemoteHostInfoFetcher);
 };
 
 }  // namespace test
 }  // namespace remoting
 
 #endif  // REMOTING_TEST_REMOTE_HOST_INFO_FETCHER_H_