[NaCl SDK] Run nacl_io_socket_test on the bots.

native_client_sdk/src/libraries/ppapi_simple/ps_instance.h

Index: native_client_sdk/src/libraries/ppapi_simple/ps_instance.h
diff --git a/native_client_sdk/src/libraries/ppapi_simple/ps_instance.h b/native_client_sdk/src/libraries/ppapi_simple/ps_instance.h
index 1829bee3ce0162a3fcc3cda760d2e803732b9b1c..ce96aae5b991b191755566c80e15b79a1f083465 100644
--- a/native_client_sdk/src/libraries/ppapi_simple/ps_instance.h
+++ b/native_client_sdk/src/libraries/ppapi_simple/ps_instance.h
@@ -184,6 +184,10 @@ class PSInstance : public pp::Instance, pp::MouseLock, pp::Graphics3DClient {
   const char* tty_prefix_;
   MessageHandlerMap message_handlers_;
 
+  // A message to Post to JavaScript instead of exiting, or NULL if exit()
+  // should be called instead.
+  char* exit_message_;
+
   PSMainFunc_t main_cb_;
 
   const PPB_Core* ppb_core_;