chrome: Cleanup class/struct forward declarations

chrome/browser/devtools/devtools_network_transaction.h

 // Copyright 2014 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_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/devtools/devtools_network_interceptor.h"
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/net_error_details.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_transaction.h"
 #include "net/websockets/websocket_handshake_stream_base.h"
 
 class DevToolsNetworkController;
 class DevToolsNetworkUploadDataStream;
-class GURL;
 
 namespace net {
 class AuthCredentials;
 class HttpRequestHeaders;
 struct HttpRequestInfo;
 class HttpResponseInfo;
-class HttpNetworkSession;
 class IOBuffer;
 struct LoadTimingInfo;
 class NetLogWithSource;
 class X509Certificate;
 }  // namespace net
 
 namespace test {
 class DevToolsNetworkControllerHelper;
 }
 
@@ skipping 84 matching lines @@
 
   const net::HttpRequestInfo* request_;
 
   // True if Fail was already invoked.
   bool failed_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsNetworkTransaction);
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_