DoAutomaticFreeDiskSpaceControl() introduced

platform.h

 // Copyright (c) 2009-2010 The Chromium OS 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 CRYPTOHOME_PLATFORM_H_
 #define CRYPTOHOME_PLATFORM_H_
 
 #include <base/basictypes.h>
 #include <set>
 #include <string>
@@ skipping 136 matching lines @@
 
   // Returns the user and group ids for a user
   //
   // Parameters
   //   user - The username to query for
   //   user_id (OUT) - The user ID on success
   //   group_id (OUT) - The group ID on success
   virtual bool GetUserId(const std::string& user, uid_t* user_id,
                          gid_t* group_id);
 
+  // Return the available disk space in bytes on the volume containing |path|,
+  // or -1 on failure.
+  // Code duplicated from Chrome's base::SysInfo::AmountOfFreeDiskSpace().
+  //
+  // Parameters
+  //   path - the pathname of any file within the mounted file system
+  virtual int64 AmountOfFreeDiskSpace(const std::string& path);
+
   // Clears the user keyring
   static void ClearUserKeyring();
 
   // Overrides the default mount options
   void set_mount_options(int value) {
     mount_options_ = value;
   }
 
   // Overrides the default mtab file
   void set_mtab_file(const std::string& value) {
@@ skipping 78 matching lines @@
  private:
   std::vector<std::string> cmd_line_;
   std::set<std::string> open_files_;
   std::string cwd_;
   int process_id_;
 };
 
 }  // namespace cryptohome
 
 #endif  // CRYPTOHOME_PLATFORM_H_