content: Cleanup class/struct forward declarations

content/browser/download/download_net_log_parameters.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_NET_LOG_PARAMETERS_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_NET_LOG_PARAMETERS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
 
 #include "content/public/browser/download_item.h"
 #include "net/base/net_errors.h"
 
-class GURL;
-
 namespace base {
 class FilePath;
 class Value;
 }
 
 namespace net {
 class NetLogCaptureMode;
 }
 
 namespace content {
@@ skipping 78 matching lines @@
 // Returns NetLog parameters for a download interruption.
 std::unique_ptr<base::Value> FileInterruptedNetLogCallback(
     const char* operation,
     int os_error,
     DownloadInterruptReason reason,
     net::NetLogCaptureMode capture_mode);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_NET_LOG_PARAMETERS_H_