PPAPI: Add PluginPrivateFileSystem

ppapi/cpp/private/plugin_private_file_system_private.h

Index: ppapi/cpp/private/plugin_private_file_system_private.h
diff --git a/ppapi/cpp/private/plugin_private_file_system_private.h b/ppapi/cpp/private/plugin_private_file_system_private.h
new file mode 100644
index 0000000000000000000000000000000000000000..1cf5656164f25890ad1d01ae48d5d6a424aef0eb
--- /dev/null
+++ b/ppapi/cpp/private/plugin_private_file_system_private.h
@@ -0,0 +1,31 @@
+// Copyright 2013 The Chromium 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 PPAPI_CPP_PRIVATE_PLUGIN_PRIVATE_FILE_SYSTEM_PRIVATE_H_
+#define PPAPI_CPP_PRIVATE_PLUGIN_PRIVATE_FILE_SYSTEM_PRIVATE_H_
+
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/cpp/completion_callback.h"
+#include "ppapi/cpp/file_system.h"
+#include "ppapi/cpp/instance_handle.h"
+
+namespace pp {
+
+class CompletionCallback;
+
+class PluginPrivateFileSystemPrivate {
+ public:
+  PluginPrivateFileSystemPrivate();
+  explicit PluginPrivateFileSystemPrivate(const InstanceHandle& instance);
+  virtual ~PluginPrivateFileSystemPrivate();
+
+  int32_t Open(const CompletionCallbackWithOutput<pp::FileSystem>& cc);
+
+ private:
+  PP_Instance instance_;
+};
+
+}  // namespace pp
+
+#endif  // PPAPI_CPP_PRIVATE_PLUGIN_PRIVATE_FILE_SYSTEM_PRIVATE_H_