Remove untrusted scripting support.

ppapi/shared_impl/ppp_instance_combined.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 PPAPI_SHARED_IMPL_PPP_INSTANCE_COMBINED_H_
 #define PPAPI_SHARED_IMPL_PPP_INSTANCE_COMBINED_H_
 
 #include "base/basictypes.h"
 #include "ppapi/c/ppp_instance.h"
 
 namespace ppapi {
 
 struct PPP_Instance_Combined : public PPP_Instance_0_5 {
  public:
   explicit PPP_Instance_Combined(const PPP_Instance_0_5& instance_if);
-  explicit PPP_Instance_Combined(const PPP_Instance_0_4& instance_if);
-
-  PP_Var (*const GetInstanceObject_0_4)(PP_Instance instance);
 
   DISALLOW_COPY_AND_ASSIGN(PPP_Instance_Combined);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_PPP_INSTANCE_COMBINED_H_