Exclude host-side code from the NaCl IRT proxy build.

ppapi/proxy/interface_list.cc

 // 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.
 
 #include "ppapi/proxy/interface_list.h"
 
 #include "base/lazy_instance.h"
 #include "base/memory/singleton.h"
 #include "ppapi/c/dev/ppb_audio_input_dev.h"
 #include "ppapi/c/dev/ppb_buffer_dev.h"
@@ skipping 246 matching lines @@
            &ProxyFactory<PPP_ContentDecryptor_Private_Proxy>);
   AddPPP(PPP_CONTENTDECRYPTOR_PRIVATE_INTERFACE,
          API_ID_PPP_CONTENT_DECRYPTOR_PRIVATE,
          PPP_ContentDecryptor_Private_Proxy::GetProxyInterface());
 #endif
   AddPPB(PPB_Testing_Proxy::GetInfo(), PERMISSION_TESTING);
 
   // PPP (plugin) interfaces.
   // TODO(brettw) move these to interface_list*.h
   AddProxy(API_ID_PPP_INSTANCE, &ProxyFactory<PPP_Instance_Proxy>);
+  #if !defined(OS_NACL)
   AddPPP(PPP_INSTANCE_INTERFACE_1_1, API_ID_PPP_INSTANCE,
          PPP_Instance_Proxy::GetInstanceInterface());
+  #endif
   AddProxy(API_ID_PPP_PRINTING, &ProxyFactory<PPP_Printing_Proxy>);
   AddPPP(PPP_PRINTING_DEV_INTERFACE, API_ID_PPP_PRINTING,
          PPP_Printing_Proxy::GetProxyInterface());
   AddProxy(API_ID_PPP_TEXT_INPUT, &ProxyFactory<PPP_TextInput_Proxy>);
   AddPPP(PPP_TEXTINPUT_DEV_INTERFACE, API_ID_PPP_TEXT_INPUT,
          PPP_TextInput_Proxy::GetProxyInterface());
 
   // Old-style GetInfo PPP interfaces.
   // Do not add more stuff here, they should be added to interface_list*.h
   // TODO(brettw) remove these.
@@ skipping 102 matching lines @@
   AddPPB(info->name, info->id, info->interface_ptr, perm);
 }
 
 void InterfaceList::AddPPP(const InterfaceProxy::Info* info) {
   AddProxy(info->id, info->create_proxy);
   AddPPP(info->name, info->id, info->interface_ptr);
 }
 
 }  // namespace proxy
 }  // namespace ppapi