Pepper: Add shared Utilities for file systems.

ppapi/shared_impl/file_system_util.h

+// 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_SHARED_IMPL_FILE_SYSTEM_UTIL_H_
+#define PPAPI_SHARED_IMPL_FILE_SYSTEM_UTIL_H_
+
+#include "ppapi/c/pp_file_info.h"
+#include "ppapi/shared_impl/ppapi_shared_export.h"
+#include "webkit/common/fileapi/file_system_types.h"
+
+namespace ppapi {
+
+PPAPI_SHARED_EXPORT
+fileapi::FileSystemType PepperFileSystemTypeToFileSystemType(
+    PP_FileSystemType type);
+
+PPAPI_SHARED_EXPORT bool FileSystemTypeIsValid(PP_FileSystemType type);
+
+PPAPI_SHARED_EXPORT bool FileSystemTypeHasQuota(PP_FileSystemType type);
+
+}  // namespace ppapi
+
+#endif  // PPAPI_SHARED_IMPL_FILE_SYSTEM_UTIL_H_