gdata: Support mounting archive files in GData cache.

chrome/browser/chromeos/gdata/gdata_util.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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_GDATA_GDATA_UTIL_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_UTIL_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 44 matching lines @@
 
 // Grants read-only file access permissions to the process whose id is |pid|
 // with ChildProcessSecurityPolicy for all possible cache paths that may be
 // given to the specified file.
 void SetPermissionsForGDataCacheFiles(Profile* profile,
                                       int pid,
                                       const FilePath& path);
 
 // Returns true if gdata is currently active with the specified profile.
 bool IsGDataAvailable(Profile* profile);
+
+// Extracts resource_id, md5, and extra_suffix from cache path.

[satorux1, 2012/04/20 21:46:10]

would be nice to add some example of input and output to make it clear what this
function does. for instance, it'd be important to tell that |extra_suffix|
contains '.' or not.

+void ParseCacheFilePath(const FilePath& path,
+                        std::string* resource_id,
+                        std::string* md5,
+                        std::string* extra_suffix);

[satorux1, 2012/04/20 21:46:10]

i suggested "suffix", but "extension" would be better to make it consistent with
the terminology used elsewhere.

[satorux1, 2012/04/20 23:05:39]

missed this comment?

 }  // namespace util
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_UTIL_H_