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diff --git a/webkit/fileapi/file_system_mount_point_provider.h b/webkit/fileapi/file_system_mount_point_provider.h
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+++ b/webkit/fileapi/file_system_mount_point_provider.h
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+// Copyright (c) 2011 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 WEBKIT_FILEAPI_FILE_SYSTEM_MOUNT_POINT_PROVIDER_H_
+#define WEBKIT_FILEAPI_FILE_SYSTEM_MOUNT_POINT_PROVIDER_H_
+
+#include "base/file_path.h"
+#include "googleurl/src/gurl.h"
+#include "webkit/fileapi/file_system_path_manager.h"
+#include "webkit/fileapi/file_system_types.h"
+
+namespace fileapi {
+
+// An interface to provide local filesystem paths.
+
+class FileSystemMountPointProvider {
+ public:
+  virtual ~FileSystemMountPointProvider() {}
+
+  // Checks if mount point access is allowed from |origin_url|.
+  virtual bool IsAccessAllowed(const GURL& origin_url) = 0;
+
+  // Retrieves the root path for the given |origin_url| and |type|, and
+  // calls the given |callback| with the root path and name.
+  // If |create| is true this also creates the directory if it doesn't exist.
+  virtual void GetFileSystemRootPath(
+      const GURL& origin_url,
+      FileSystemType type,
+      bool create,
+      FileSystemPathManager::GetRootPathCallback* callback) = 0;
+
+  // Like GetFileSystemRootPath, but synchronous, and can be called only while
+  // running on the file thread.
+  virtual FilePath GetFileSystemRootPathOnFileThread(
+      const GURL& origin_url,
+      FileSystemType type,
+      bool create) = 0;
+
+  // Checks if a given |name| contains any restricted names/chars in it.
+  // Callable on any thread.
+  virtual bool IsRestrictedFileName(const FilePath& filename) const = 0;
+};
+
+}  // namespace fileapi
+
+#endif  // WEBKIT_FILEAPI_FILE_SYSTEM_MOUNT_POINT_PROVIDER_H_
+