Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_file_ref.h

Index: ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_file_ref.h
===================================================================
--- ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_file_ref.h	(revision 0)
+++ ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_file_ref.h	(revision 0)
@@ -0,0 +1,24 @@
+// Copyright (c) 2011 The Native Client Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_FILE_REF_H_
+#define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_FILE_REF_H_
+
+#include "native_client/src/include/nacl_macros.h"
+#include "ppapi/c/ppb_file_ref.h"
+
+namespace ppapi_proxy {
+
+// Implements the untrusted side of the PPB_FileRef interface.
+class PluginFileRef {
+ public:
+  static const PPB_FileRef* GetInterface();
+
+ private:
+  NACL_DISALLOW_COPY_AND_ASSIGN(PluginFileRef);
+};
+
+}  // namespace ppapi_proxy
+
+#endif  // NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_FILE_REF_H_