net: Cleanup class/struct forward declarations

net/url_request/url_request_context_getter.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 NET_URL_REQUEST_URL_REQUEST_CONTEXT_GETTER_H_
 #define NET_URL_REQUEST_URL_REQUEST_CONTEXT_GETTER_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "net/base/net_export.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace net {
-class CookieStore;
 class URLRequestContext;
 class URLRequestContextGetterObserver;
 
 struct URLRequestContextGetterTraits;
 
 // Interface for retrieving an URLRequestContext.
 class NET_EXPORT URLRequestContextGetter
     : public base::RefCountedThreadSafe<URLRequestContextGetter,
                                         URLRequestContextGetterTraits> {
  public:
@@ skipping 69 matching lines @@
 
   URLRequestContext* context_;
   const scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(TrivialURLRequestContextGetter);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_CONTEXT_GETTER_H_