drive: Stop mentioning about symlinks

chrome/browser/chromeos/drive/file_system_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_DRIVE_FILE_SYSTEM_UTIL_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_UTIL_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
@@ skipping 128 matching lines @@
 
 // Escapes forward slashes from file names with magic unicode character
 // \u2215 pretty much looks the same in UI.
 std::string EscapeUtf8FileName(const std::string& input);
 
 // Gets the cache root path (i.e. <user_profile_dir>/GCache/v1) from the
 // profile.
 base::FilePath GetCacheRootPath(Profile* profile);
 
 // Extracts resource_id, md5, and extra_extension from cache path.
-// Case 1: Pinned and outgoing symlinks only have resource_id.
-// Example: path="/user/GCache/v1/pinned/pdf:a1b2" =>
-//          resource_id="pdf:a1b2", md5="", extra_extension="";
-// Case 2: Normal files have both resource_id and md5.
+// Case 1: Normal files have both resource_id and md5.
 // Example: path="/user/GCache/v1/tmp/pdf:a1b2.01234567" =>
 //          resource_id="pdf:a1b2", md5="01234567", extra_extension="";
-// Case 3: Mounted files have all three parts.
+// Case 2: Mounted files have all three parts.
 // Example: path="/user/GCache/v1/persistent/pdf:a1b2.01234567.mounted" =>
 //          resource_id="pdf:a1b2", md5="01234567", extra_extension="mounted".
 void ParseCacheFilePath(const base::FilePath& path,
                         std::string* resource_id,
                         std::string* md5,
                         std::string* extra_extension);
 
 // Callback type for PrepareWritableFileAndRun.
 typedef base::Callback<void (FileError, const base::FilePath& path)>
     OpenFileCallback;
@@ skipping 64 matching lines @@
 // Reads URL from a GDoc file.
 GURL ReadUrlFromGDocFile(const base::FilePath& file_path);
 
 // Reads resource ID from a GDoc file.
 std::string ReadResourceIdFromGDocFile(const base::FilePath& file_path);
 
 }  // namespace util
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_UTIL_H_