When launching PNaCl helper nexes, explicitly disable IRT loading.

ppapi/native_client/src/trusted/plugin/plugin.cc

Index: ppapi/native_client/src/trusted/plugin/plugin.cc
diff --git a/ppapi/native_client/src/trusted/plugin/plugin.cc b/ppapi/native_client/src/trusted/plugin/plugin.cc
index c8c919420ac3daeae0f6b37a37d7cfc6aba04dfc..0475c78957c51d22b7c5d403e38adae4fbdf1b47 100644
--- a/ppapi/native_client/src/trusted/plugin/plugin.cc
+++ b/ppapi/native_client/src/trusted/plugin/plugin.cc
@@ -545,6 +545,7 @@ bool Plugin::LoadNaClModuleCommon(nacl::DescWrapper* wrapper,
                                   const Manifest* manifest,
                                   bool should_report_uma,
                                   bool uses_ppapi,
+                                  bool uses_irt,
                                   ErrorInfo* error_info,
                                   pp::CompletionCallback init_done_cb,
                                   pp::CompletionCallback crash_cb) {
@@ -566,6 +567,7 @@ bool Plugin::LoadNaClModuleCommon(nacl::DescWrapper* wrapper,
                                  manifest_base_url(),
                                  uses_ppapi,
                                  enable_dev_interfaces_,
+                                 uses_irt,
                                  crash_cb);
   PLUGIN_PRINTF(("Plugin::LoadNaClModuleCommon (service_runtime_started=%d)\n",
                  service_runtime_started));
@@ -587,6 +589,7 @@ bool Plugin::LoadNaClModule(nacl::DescWrapper* wrapper,
   if (!LoadNaClModuleCommon(wrapper, &main_subprocess_, manifest_.get(),
                             true /* should_report_uma */,
                             true /* uses_ppapi */,
+                            true /* uses_irt */,
                             error_info, init_done_cb, crash_cb)) {
     return false;
   }
@@ -650,6 +653,7 @@ NaClSubprocess* Plugin::LoadHelperNaClModule(nacl::DescWrapper* wrapper,
   if (!LoadNaClModuleCommon(wrapper, nacl_subprocess.get(), manifest,
                             false /* should_report_uma */,
                             false /* uses_ppapi */,
+                            false /* uses_irt */,

[Mark Seaborn, 2013/01/04 00:05:41]

Maybe comment that the PNaCl translator isn't built to use the IRT, and why.

[jvoung (off chromium), 2013/01/04 17:09:23]

Done.

                             error_info,
                             pp::BlockUntilComplete(),
                             pp::BlockUntilComplete())) {