When launching PNaCl helper nexes, explicitly disable IRT loading.

chrome/renderer/pepper/ppb_nacl_private_impl.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 "chrome/renderer/pepper/ppb_nacl_private_impl.h"
 
 #ifndef DISABLE_NACL
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 50 matching lines @@
   content::RendererPpapiHost *host =
       content::RendererPpapiHost::GetForPPInstance(instance);
   if (!host)
     return 0;
   return host->GetRoutingIDForWidget(instance);
 }
 
 // Launch NaCl's sel_ldr process.
 PP_NaClResult LaunchSelLdr(PP_Instance instance,
                            const char* alleged_url,
+                           PP_Bool uses_irt,
                            PP_Bool uses_ppapi,
                            PP_Bool enable_ppapi_dev,
                            void* imc_handle) {
   nacl::FileDescriptor result_socket;
   IPC::Sender* sender = content::RenderThread::Get();
   if (sender == NULL)
     sender = g_background_thread_sender.Pointer()->get();
 
   int routing_id = 0;
   // If the nexe uses ppapi APIs, we need a routing ID.
@@ skipping 14 matching lines @@
   // it's clearer to developers when they are using 'Dev' inappropriately. We
   // must also check on the trusted side of the proxy.
   if (enable_ppapi_dev)
     perm_bits |= ppapi::PERMISSION_DEV;
   instance_info.permissions =
       ppapi::PpapiPermissions::GetForCommandLine(perm_bits);
 
   if (!sender->Send(new ChromeViewHostMsg_LaunchNaCl(
           nacl::NaClLaunchParams(instance_info.url.spec(),
                                  routing_id,
-                                 perm_bits),
+                                 perm_bits,
+                                 PP_ToBool(uses_irt)),
           &result_socket,
           &instance_info.channel_handle,
           &instance_info.plugin_pid,
           &instance_info.plugin_child_id))) {
     return PP_NACL_FAILED;
   }
 
   // Don't save instance_info if channel handle is invalid.
   bool invalid_handle = instance_info.channel_handle.name.empty();
 #if defined(OS_POSIX)
@@ skipping 161 matching lines @@
   &ReportNaClError
 };
 
 }  // namespace
 
 const PPB_NaCl_Private* PPB_NaCl_Private_Impl::GetInterface() {
   return &nacl_interface;
 }
 
 #endif  // DISABLE_NACL