Add first implemenation for SU password sync

chrome/browser/chromeos/login/supervised_user_manager_impl.h

Index: chrome/browser/chromeos/login/supervised_user_manager_impl.h
diff --git a/chrome/browser/chromeos/login/supervised_user_manager_impl.h b/chrome/browser/chromeos/login/supervised_user_manager_impl.h
index e598006547566d7fb0aa4b4f6c6977f9b01c7ab4..04a7913e49ac36779f6d430b8640d96a30564345 100644
--- a/chrome/browser/chromeos/login/supervised_user_manager_impl.h
+++ b/chrome/browser/chromeos/login/supervised_user_manager_impl.h
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "chrome/browser/chromeos/login/managed/supervised_user_authentication.h"
 #include "chrome/browser/chromeos/login/supervised_user_manager.h"
 
 namespace chromeos {
@@ -42,6 +43,13 @@ class SupervisedUserManagerImpl
   virtual void SetCreationTransactionUserId(const std::string& user_id)
       OVERRIDE;
   virtual void CommitCreationTransaction() OVERRIDE;
+  virtual SupervisedUserAuthentication* GetSupervisedUserAuthentication()
+      OVERRIDE;
+  virtual void GetPasswordInformation(const std::string& user_id,
+                                      base::DictionaryValue* result) OVERRIDE;
+  virtual void SetPasswordInformation(
+      const std::string& user_id,
+      const base::DictionaryValue* password_info) OVERRIDE;
 
  private:
   friend class UserManager;
@@ -63,11 +71,24 @@ class SupervisedUserManagerImpl
   void UpdateManagerName(const std::string& manager_id,
                          const string16& new_display_name);
 
+  bool GetUserValue(const std::string& user_id,

[Nikita (slow), 2013/12/09 16:42:16]

nit: Please add comments for these new functions.

+                    const char* key,
+                    std::string* out_value) const;
+
+  void SetUserValue(const std::string& user_id,
+                    const char* key,
+                    const std::string& value);
+
+  void CleanPref(const std::string& user_id,
+                 const char* key);
+
   UserManagerImpl* owner_;
 
   // Interface to the signed settings store.
   CrosSettings* cros_settings_;
 
+  scoped_ptr<SupervisedUserAuthentication> authentication_;
+
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserManagerImpl);
 };