[login_manager] Code to add the owner to the whitelist in a device policy

owner_key.h

 // Copyright (c) 2011 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 LOGIN_MANAGER_OWNER_KEY_H_
 #define LOGIN_MANAGER_OWNER_KEY_H_
 
 #include <vector>
 
 #include <base/basictypes.h>
@@ skipping 16 matching lines @@
 // present, we will allow the owner's key to be set programmatically,
 // and will persist it to disk upon request.  Attempts to set the key
 // before on-disk storage has been checked will be denied.
 class OwnerKey {
  public:
   explicit OwnerKey(const FilePath& key_file);
   virtual ~OwnerKey();
 
   virtual bool Equals(const std::string& key_der) const;
   virtual bool VEquals(const std::vector<uint8>& key_der) const;
-  virtual bool HaveCheckedDisk();
-  virtual bool IsPopulated();
+  virtual bool HaveCheckedDisk() const;
+  virtual bool IsPopulated() const;
 
   // If |key_file_| exists, populate the object with the contents of the file.
   // If the file isn't there, that's ok.
   // Will return false if the file exists and there are errors reading it.
   // If this returns true, call IsPopulated() to tell whether or not data was
   // loaded off of disk.
   virtual bool PopulateFromDiskIfPossible();
 
   // Load key material from |public_key_der|.
   // We will _deny_ such an attempt if we have not yet checked disk for a key,
@@ skipping 53 matching lines @@
   bool have_checked_disk_;
   bool have_replaced_;
   std::vector<uint8> key_;
   scoped_ptr<SystemUtils> utils_;
 
   DISALLOW_COPY_AND_ASSIGN(OwnerKey);
 };
 }  // namespace login_manager
 
 #endif  // LOGIN_MANAGER_OWNER_KEY_H_