linux and chromeos: Turn on -Wunused-const-variable.

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 19 matching lines @@
 namespace {
 
 const char kJsScreenPath[] = "login.OAuthEnrollmentScreen";
 
 // Start page of GAIA authentication extension.
 const char kGaiaExtStartPage[] =
     "chrome-extension://mfffpogegjflfpflabcdkioaeobkgjik/main.html";
 
 // Enrollment step names.
 const char kEnrollmentStepSignin[] = "signin";
-const char kEnrollmentStepWorking[] = "working";
-const char kEnrollmentStepError[] = "error";
 const char kEnrollmentStepSuccess[] = "success";
 
 }  // namespace
 
 namespace chromeos {
 
 // EnrollmentScreenHandler::TokenRevoker ------------------------
 
 // A helper class that takes care of asynchronously revoking a given token.
 class EnrollmentScreenHandler::TokenRevoker
@@ skipping 360 matching lines @@
   DictionaryValue screen_data;
   screen_data.SetString("signin_url", kGaiaExtStartPage);
   screen_data.SetString("gaiaUrl", GaiaUrls::GetInstance()->gaia_url().spec());
   screen_data.SetBoolean("is_auto_enrollment", is_auto_enrollment_);
   screen_data.SetBoolean("prevent_cancellation", !can_exit_enrollment_);
 
   ShowScreen(OobeUI::kScreenOobeEnrollment, &screen_data);
 }
 
 }  // namespace chromeos