[ChromeOS] Add an extra stage to remove a user in WebUI login.

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 cd75fbd6be3772c29bd587d3f0545b643228ee4d..87845e300a29832f383e47e051f6576b8f55c0f1 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
@@ -97,6 +97,8 @@ void SigninScreenHandler::GetLocalizedStrings(
       l10n_util::GetStringUTF16(IDS_CREATE_ACCOUNT_BUTTON));
   localized_strings->SetString("guestSignin",
       l10n_util::GetStringUTF16(IDS_BROWSE_WITHOUT_SIGNING_IN_BUTTON));
+  localized_strings->SetString("removeUser",
+      l10n_util::GetStringUTF16(IDS_LOGIN_REMOVE));
 
   if (extension_driven_)
     localized_strings->SetString("authType", "ext");