disable pnacl by default

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

Index: ppapi/native_client/src/trusted/plugin/service_runtime.cc
diff --git a/ppapi/native_client/src/trusted/plugin/service_runtime.cc b/ppapi/native_client/src/trusted/plugin/service_runtime.cc
index 943a94b56ec01d1195a0741b1b053a5342f7e4f8..2b43b2e6e847db484104f30ea5cb2b52b0b7e1a8 100644
--- a/ppapi/native_client/src/trusted/plugin/service_runtime.cc
+++ b/ppapi/native_client/src/trusted/plugin/service_runtime.cc
@@ -355,8 +355,8 @@ void PluginReverseInterface::OpenManifestEntry_MainThreadContinuation(
       *p->op_complete_ptr = true;  // done...
       p->file_info->desc = -1;  // but failed.
       p->error_info->SetReport(ERROR_PNACL_NOT_ENABLED,
-                               "ServiceRuntime: GetPnaclFd failed -- pnacl "
-                               "disabled with --disable-pnacl.");
+                               "ServiceRuntime: GetPnaclFd failed -- pnacl not "
+                               "enabled with --enable-pnacl.");
       NaClXCondVarBroadcast(&cv_);
       return;
     }