ppapi NaCl trusted plugin: Rename interface because Win build breaks on it.

ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.h

Index: ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.h
diff --git a/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.h b/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.h
index 82e7d8d5a7bbfb9752a30f364996ebfd777823c7..2b93d1e543da0e010b1006b62a3d3ffb40f87673 100644
--- a/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.h
+++ b/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.h
@@ -71,7 +71,7 @@ class PnaclTranslateThread {
   // service call.
   // (see also the comments in Plugin::~Plugin about ShutdownSubprocesses,
   // but that only handles the main nexe and not the translator nexes.)
-  void RegisterReverseInterface(PluginReverseInterface *interface);
+  void RegisterReverseInterface(PluginReverseInterface *iface);
 
   // Callback to run when tasks are completed or an error has occurred.
   pp::CompletionCallback report_translate_finished_;