Enable 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 09a07244ccdc12c47bd6c9831f7a783a15061ed4..0905c6da7f778d539d785f09cca10ac9fa188f38 100644
--- a/ppapi/native_client/src/trusted/plugin/plugin.cc
+++ b/ppapi/native_client/src/trusted/plugin/plugin.cc
@@ -1213,9 +1213,9 @@ void Plugin::ProcessNaClManifest(const nacl::string& manifest_json) {
                                               translate_callback));
         return;
       } else {
-        error_info.SetReport(ERROR_PNACL_NOT_ENABLED,
-                             "PNaCl has not been enabled (e.g., by setting "
-                             "the --enable-pnacl flag).");
+        error_info.SetReport(ERROR_PNACL_DISABLED,
+                             "PNaCl has been disabled (e.g., by setting "
+                             "the --disable-pnacl flag).");
       }
     } else {
       // Try the fast path first. This will only block if the file is installed.