Refactor user pods to use authType property for distinct authentication modes.

chrome/browser/chromeos/login/login_display.h

Index: chrome/browser/chromeos/login/login_display.h
diff --git a/chrome/browser/chromeos/login/login_display.h b/chrome/browser/chromeos/login/login_display.h
index 60122aa774887be3ecd77fa7dec926b7d608da57..576e690cbdb6b29b46a871131c1734ae0f9cfa5f 100644
--- a/chrome/browser/chromeos/login/login_display.h
+++ b/chrome/browser/chromeos/login/login_display.h
@@ -24,6 +24,21 @@ namespace chromeos {
 // An abstract class that defines login UI implementation.
 class LoginDisplay : public RemoveUserDelegate {
  public:
+  // Supported authentication types for login.
+  enum AuthType {

[Nikita (slow), 2014/02/20 15:12:18]

It feels that this enum might leave somewhere else but I'm not sure where.

It's not like chrome/browser/chromeos/login/authenticator.h is a much better
place.

+    // Authenticates using the user's regular password.
+    OFFLINE_PASSWORD,
+
+    // Authenticates by forced online GAIA sign in.
+    ONLINE_SIGN_IN,
+
+    // Authenticates with a 4 digit numeric pin.
+    NUMERIC_PIN,
+
+    // Authenticates by clicking pod when it is focused.
+    USER_CLICK,
+  };
+
   // Sign in error IDs that require detailed error screen and not just
   // a simple error bubble.
   enum SigninError {
@@ -154,6 +169,17 @@ class LoginDisplay : public RemoveUserDelegate {
                                  const std::string& iconURL,
                                  const base::Closure& click_callback) = 0;
 
+  // Hides the user pod button for a user.
+  virtual void HideUserPodButton(const std::string& username) = 0;
+
+  // Set the authentication type to be used on the lock screen.
+  virtual void SetAuthType(const std::string& username,
+                           AuthType auth_type,
+                           const std::string& initial_value) = 0;
+
+  // Returns the authentication type used for |username|.
+  virtual AuthType GetAuthType(const std::string& username) const = 0;
+
   // Displays simple error bubble with |error_msg_id| specified.
   // |login_attempts| shows number of login attempts made by current user.
   // |help_topic_id| is additional help topic that is presented as link.