Cleanup: Remove unneeded forward declarations in printing, sandbox, and skia.

sandbox/src/sandbox_policy_base.h

-// Copyright (c) 2006-2011 The Chromium Authors. All rights reserved.
+// 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 SANDBOX_SRC_SANDBOX_POLICY_BASE_H_
 #define SANDBOX_SRC_SANDBOX_POLICY_BASE_H_
 
 #include <windows.h>
+
 #include <list>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 #include "sandbox/src/crosscall_server.h"
 #include "sandbox/src/handle_closer.h"
 #include "sandbox/src/ipc_tags.h"
 #include "sandbox/src/policy_engine_opcodes.h"
 #include "sandbox/src/policy_engine_params.h"
 #include "sandbox/src/sandbox_policy.h"
 #include "sandbox/src/win_utils.h"
 
 namespace sandbox {
 
+class LowLevelPolicy;
 class TargetProcess;
-class PolicyRule;
-class LowLevelPolicy;
 struct PolicyGlobal;
 
 // We act as a policy dispatcher, implementing the handler for the "ping" IPC,
 // so we have to provide the appropriate handler on the OnMessageReady method.
 // There is a static_cast for the handler, and the compiler only performs the
 // cast if the first base class is Dispatcher.
 class PolicyBase : public Dispatcher, public TargetPolicy {
  public:
   PolicyBase();
 
@@ skipping 143 matching lines @@
 
   static HDESK alternate_desktop_handle_;
   static HWINSTA alternate_winstation_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(PolicyBase);
 };
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_SRC_SANDBOX_POLICY_BASE_H_