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 49 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,
                            int socket_count,
                            void* imc_handles) {
   std::vector<nacl::FileDescriptor> sockets;
   IPC::Sender* sender = content::RenderThread::Get();
   if (sender == NULL)
     sender = g_background_thread_sender.Pointer()->get();
 
   int routing_id = 0;
@@ skipping 16 matching lines @@
   // 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(
           instance_info.url,
           routing_id,
           perm_bits,
-          socket_count, &sockets,
+          PP_ToBool(uses_irt),
+          socket_count,
+          &sockets,
           &instance_info.channel_handle,
           &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)
   if (!invalid_handle)
     invalid_handle = (instance_info.channel_handle.socket.fd == -1);
@@ skipping 161 matching lines @@
   &ReportNaClError
 };
 
 }  // namespace
 
 const PPB_NaCl_Private* PPB_NaCl_Private_Impl::GetInterface() {
   return &nacl_interface;
 }
 
 #endif  // DISABLE_NACL