[cros] Cleanup login auth stack: remove ClientLogin legacy code

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index 60e87c51ffc0fc4ab9b0057907bed9293a2e89f8..a624dd29ffec01534f52645ddc498f383ea768e5 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -160,9 +160,7 @@ class StubLogin : public LoginStatusConsumer,
         g_browser_process->profile_manager()->GetDefaultProfile(),
         UserContext(username,
                     password,
-                    std::string()),  // auth_code
-        std::string(),   // login_token
-        std::string());  // login_captcha
+                    std::string()));  // auth_code
   }
 
   virtual ~StubLogin() {