Add initial code to do filename munging in the FileSystem....

webkit/fileapi/file_system_path_manager.h

 // Copyright (c) 2010 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_PATH_MANAGER_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_PATH_MANAGER_H_
 
 #include <map>
 
 #include "base/callback.h"
@@ skipping 29 matching lines @@
 
   // 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.
   void GetFileSystemRootPath(const GURL& origin_url,
                              fileapi::FileSystemType type,
                              bool create,
                              GetRootPathCallback* callback);
 
   // Cracks the given |path|, retrieves the information embedded in the path
-  // and populates |origin_url| and |type|.  Also it populates |virtual_path|
-  // that is a sandboxed path in the file system, i.e. the relative path to
-  // the file system's root path for the given origin and type.
-  // It returns false if the path does not conform to the expected
-  // filesystem path format.
+  // and populates |origin_url| and |type|.  Also it populates |root| and
+  // |virtual_path|, where |virtual_path| is a sandboxed path in the file
+  // system, i.e. the relative path to the filesystem root for the given domain
+  // and type.  Concatenate |root| and |virtual_path| to get a canonical form of
+  // |path|.
+  // It returns false if the path does not conform to the expected filesystem
+  // path format.
   bool CrackFileSystemPath(const FilePath& path,
                            GURL* origin_url,
                            FileSystemType* type,
+                           FilePath* root,
                            FilePath* virtual_path) const;
 
   // Checks if a given |name| contains any restricted names/chars in it.
   bool IsRestrictedFileName(const FilePath& filename) const;
 
   // Returns true if the given |url|'s scheme is allowed to access
   // filesystem.
   bool IsAllowedScheme(const GURL& url) const;
 
   // The FileSystem directory name.
@@ skipping 17 matching lines @@
   const FilePath base_path_;
   const bool is_incognito_;
   const bool allow_file_access_from_files_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemPathManager);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_PATH_MANAGER_H_