ChromeOS login webui refactoring : Simplify login methods.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
index fe6a0ecf2803559439a2f1d38487598f68f05675..3105ce356019eb2cf2feab6c2941ae33b52b9c6d 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
@@ -981,7 +981,7 @@ void SigninScreenHandler::HandleAuthenticateUser(const std::string& username,
     return;
   UserContext user_context(username);
   user_context.SetKey(Key(password));
-  delegate_->Login(user_context);
+  delegate_->Login(user_context, SigninSpecifics());
 }
 
 void SigninScreenHandler::HandleAttemptUnlock(const std::string& username) {
@@ -1006,13 +1006,15 @@ void SigninScreenHandler::HandleAttemptUnlock(const std::string& username) {
 }
 
 void SigninScreenHandler::HandleLaunchDemoUser() {
+  UserContext context(User::USER_TYPE_RETAIL_MODE, std::string());
   if (delegate_)
-    delegate_->LoginAsRetailModeUser();
+    delegate_->Login(context, SigninSpecifics());
 }
 
 void SigninScreenHandler::HandleLaunchIncognito() {
+  UserContext context(User::USER_TYPE_GUEST, std::string());
   if (delegate_)
-    delegate_->LoginAsGuest();
+    delegate_->Login(context, SigninSpecifics());
 }
 
 void SigninScreenHandler::HandleShowLocallyManagedUserCreationScreen() {
@@ -1028,8 +1030,9 @@ void SigninScreenHandler::HandleShowLocallyManagedUserCreationScreen() {
 
 void SigninScreenHandler::HandleLaunchPublicAccount(
     const std::string& username) {
+  UserContext context(User::USER_TYPE_PUBLIC_ACCOUNT, username);
   if (delegate_)
-    delegate_->LoginAsPublicAccount(username);
+    delegate_->Login(context, SigninSpecifics());
 }
 
 void SigninScreenHandler::HandleOfflineLogin(const base::ListValue* args) {
@@ -1255,6 +1258,7 @@ void SigninScreenHandler::HandleFocusPod(const std::string& user_id) {
 
 void SigninScreenHandler::HandleRetrieveAuthenticatedUserEmail(
     double attempt_token) {
+  // TODO(antrim) : move GaiaSigninScreen dependency to GaiaSigninScreen.
   email_retriever_.reset(new AuthenticatedUserEmailRetriever(
       base::Bind(&SigninScreenHandler::CallJS<double, std::string>,
                  base::Unretained(this),
@@ -1265,7 +1269,11 @@ void SigninScreenHandler::HandleRetrieveAuthenticatedUserEmail(
 
 void SigninScreenHandler::HandleLaunchKioskApp(const std::string& app_id,
                                                bool diagnostic_mode) {
-  delegate_->LoginAsKioskApp(app_id, diagnostic_mode);
+  UserContext context(User::USER_TYPE_KIOSK_APP, app_id);
+  SigninSpecifics specifics;
+  specifics.kiosk_diagnostic_mode = diagnostic_mode;
+  if (delegate_)
+    delegate_->Login(context, specifics);
 }
 
 bool SigninScreenHandler::AllWhitelistedUsersPresent() {