Factor out PP_FileHandle from ppb_flash_file into its

ppapi/c/private/pp_file_handle.h

+/* Copyright (c) 2012 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.
+ */
+
+/* From private/pp_file_handle.idl modified Thu Jul 26 10:46:37 2012. */
+
+#ifndef PPAPI_C_PRIVATE_PP_FILE_HANDLE_H_
+#define PPAPI_C_PRIVATE_PP_FILE_HANDLE_H_
+
+#include "ppapi/c/pp_macros.h"
+
+/**
+ * @file
+ * This file provides support for native OS file handles.
+ */
+
+
+
+#ifdef _WIN32
+#include<windows.h>
+typedef HANDLE PP_FileHandle;
+static const PP_FileHandle PP_kInvalidFileHandle = NULL;
+
+#else
+typedef int PP_FileHandle;
+static const PP_FileHandle PP_kInvalidFileHandle = -1;
+#endif
+
+#endif  /* PPAPI_C_PRIVATE_PP_FILE_HANDLE_H_ */
+