remoting: Cleanup class/struct fwd declarations

remoting/test/app_remoting_report_issue_request.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_APP_REMOTING_REPORT_ISSUE_REQUEST_H_
 #define REMOTING_TEST_APP_REMOTING_REPORT_ISSUE_REQUEST_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"
 
-namespace net {
-class UrlFetcher;
-}
 namespace remoting {
 class URLRequestContextGetter;
 }
 
 namespace remoting {
 namespace test {
 
 // Calls the App Remoting service API to report an issue.  This is typically
 // used to abandon a remote host or to upload crash logs.
 // Must be used from a thread running an IO message loop.
@@ skipping 24 matching lines @@
   // Caller-supplied callback which is signalled when the request is complete.
   base::Closure request_complete_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(AppRemotingReportIssueRequest);
 };
 
 }  // namespace test
 }  // namespace remoting
 
 #endif  // REMOTING_TEST_APP_REMOTING_REPORT_ISSUE_REQUEST_H_