disable pnacl by default

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 a4833ee0e1656158fb32626240e9ee8bd9db7f6f..fe27aa29143eea64dafa8361d9ca6d336d6aab25 100644
--- a/ppapi/native_client/src/trusted/plugin/plugin.cc
+++ b/ppapi/native_client/src/trusted/plugin/plugin.cc
@@ -1230,8 +1230,8 @@ void Plugin::ProcessNaClManifest(const nacl::string& manifest_json) {
         }
       } else {
         error_info.SetReport(ERROR_PNACL_NOT_ENABLED,
-                             "PNaCl has been disabled (e.g., by setting "
-                             "the --disable-pnacl flag).");
+                             "PNaCl has not been enabled (e.g., by setting "
+                             "the --enable-pnacl flag).");
       }
     } else {
       // Try the fast path first. This will only block if the file is installed.