Cleanup: Remove unneeded forward declararations in net.

net/http/http_stream_factory.h

 // Copyright (c) 2011 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 NET_HTTP_HTTP_STREAM_FACTORY_H_
 #define NET_HTTP_HTTP_STREAM_FACTORY_H_
 
 #include <list>
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/net_export.h"
 
 class GURL;
 
 namespace net {
 
 class AuthCredentials;
 class BoundNetLog;
 class HostMappingRules;
 class HostPortPair;
 class HttpAuthController;
-class HttpNetworkSession;
-class HttpPipelinedHost;
 class HttpResponseInfo;
 class HttpServerProperties;
 class HttpStream;
 class ProxyInfo;
 class SSLCertRequestInfo;
 class SSLInfo;
-class X509Certificate;
 struct HttpRequestInfo;
 struct SSLConfig;
 
 // The HttpStreamRequest is the client's handle to the worker object which
 // handles the creation of an HttpStream.  While the HttpStream is being
 // created, this object is the creator's handle for interacting with the
 // HttpStream creation process.  The request is cancelled by deleting it, after
 // which no callbacks will be invoked.
 class NET_EXPORT_PRIVATE HttpStreamRequest {
  public:
@@ skipping 215 matching lines @@
   static std::list<HostPortPair>* forced_spdy_exclusions_;
   static bool ignore_certificate_errors_;
   static bool http_pipelining_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpStreamFactory);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_STREAM_FACTORY_H_