Support for guest signin and new user accounts in gaia signin screen.

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

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
===================================================================
--- chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc	(revision 96208)
+++ chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc	(working copy)
@@ -93,6 +93,10 @@
       l10n_util::GetStringUTF16(IDS_LOGIN_OFFLINE_TITLE));
   localized_strings->SetString("offlineMessageBody",
       l10n_util::GetStringUTF16(IDS_LOGIN_OFFLINE_MESSAGE));
+  localized_strings->SetString("createAccount",
+      l10n_util::GetStringUTF16(IDS_CREATE_ACCOUNT_BUTTON));
+  localized_strings->SetString("guestSignin",
+      l10n_util::GetStringUTF16(IDS_BROWSE_WITHOUT_SIGNING_IN_BUTTON));
 
   if (extension_driven_)
     localized_strings->SetString("authType", "ext");
@@ -151,6 +155,8 @@
       NewCallback(this, &SigninScreenHandler::HandleToggleEnrollmentScreen));
   web_ui_->RegisterMessageCallback("launchHelpApp",
       NewCallback(this, &SigninScreenHandler::HandleLaunchHelpApp));
+  web_ui_->RegisterMessageCallback("createAccount",
+      NewCallback(this, &SigninScreenHandler::HandleCreateAccount));
 }
 
 void SigninScreenHandler::HandleGetUsers(const base::ListValue* args) {
@@ -240,6 +246,11 @@
     if (args && args->GetString(0, &email))
       params.SetString("email", email);
 
+    params.SetBoolean("createAccount",
+        UserCrosSettingsProvider::cached_allow_new_user());
+    params.SetBoolean("guestSignin",
+        UserCrosSettingsProvider::cached_allow_guest());
+
     ShowScreen(kGaiaSigninScreen, &params);
   } else {
     ShowScreen(kSigninScreen, NULL);
@@ -335,4 +346,8 @@
                                   users_list, animated_value);
 }
 
+void SigninScreenHandler::HandleCreateAccount(const base::ListValue* args) {
+  delegate_->CreateAccount();
+}
+
 }  // namespace chromeos