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 58d64716c1ad5ee273973e5e2ca9605e8f94c6fc..aa6474e65002da9da7da1e32a83aa22ba759f58e 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 IsLoggedInAsRegularSupervisedUser() const override;
-  virtual bool IsLoggedInAsDemoUser() const override;
   virtual bool IsLoggedInAsPublicAccount() const override;
   virtual bool IsLoggedInAsGuest() const override;
   virtual bool IsLoggedInAsSupervisedUser() const override;
@@ -234,9 +233,6 @@ 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;