Cleanup remaining class/struct fwd declarations

sandbox/win/src/broker_services.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 SANDBOX_WIN_SRC_BROKER_SERVICES_H_
 #define SANDBOX_WIN_SRC_BROKER_SERVICES_H_
 
 #include <list>
 #include <map>
 #include <memory>
@@ skipping 11 matching lines @@
 #include "sandbox/win/src/win_utils.h"
 
 namespace {
 
 struct JobTracker;
 
 }  // namespace
 
 namespace sandbox {
 
-class PolicyBase;
-
 // BrokerServicesBase ---------------------------------------------------------
 // Broker implementation version 0
 //
 // This is an implementation of the interface BrokerServices and
 // of the associated TargetProcess interface. In this implementation
 // TargetProcess is a friend of BrokerServices where the later manages a
 // collection of the former.
 class BrokerServicesBase final : public BrokerServices,
                                  public SingletonBase<BrokerServicesBase> {
  public:
@@ skipping 49 matching lines @@
   // jobs.
   std::set<DWORD> child_process_ids_;
 
   DISALLOW_COPY_AND_ASSIGN(BrokerServicesBase);
 };
 
 }  // namespace sandbox
 
 
 #endif  // SANDBOX_WIN_SRC_BROKER_SERVICES_H_