Remove retail mode.

components/user_manager/user_manager_base.h

Index: components/user_manager/user_manager_base.h
diff --git a/components/user_manager/user_manager_base.h b/components/user_manager/user_manager_base.h
index d586f352cfe0dc6ef4116e5bc39f6d2980642676..d9944cd2af172f51d90008ce5f1aa5612838e04b 100644
--- a/components/user_manager/user_manager_base.h
+++ b/components/user_manager/user_manager_base.h
@@ -91,7 +91,6 @@ class USER_MANAGER_EXPORT UserManagerBase : public UserManager {
   virtual bool IsUserLoggedIn() const override;
   virtual bool IsLoggedInAsUserWithGaiaAccount() const override;
   virtual bool IsLoggedInAsChildUser() const override;
-  virtual bool IsLoggedInAsDemoUser() const override;
   virtual bool IsLoggedInAsPublicAccount() const override;
   virtual bool IsLoggedInAsGuest() const override;
   virtual bool IsLoggedInAsSupervisedUser() const override;
@@ -233,9 +232,6 @@ class USER_MANAGER_EXPORT UserManagerBase : public UserManager {
   // Indicates that a regular user just logged in as ephemeral.
   virtual void RegularUserLoggedInAsEphemeral(const std::string& user_id);
 
-  // Indicates that a user just logged into a retail mode session.
-  virtual void RetailModeUserLoggedIn() = 0;
-
   // Indicates that a supervised user just logged in.
   virtual void SupervisedUserLoggedIn(const std::string& user_id) = 0;