Move some global feature defines to buildflags

chrome/browser/ssl/captive_portal_blocking_page.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_SSL_CAPTIVE_PORTAL_BLOCKING_PAGE_H_
 #define CHROME_BROWSER_SSL_CAPTIVE_PORTAL_BLOCKING_PAGE_H_
 
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "chrome/browser/interstitials/security_interstitial_page.h"
+#include "chrome/common/features.h"
 #include "content/public/browser/certificate_request_result_type.h"
 #include "url/gurl.h"
 
-#if !defined(ENABLE_CAPTIVE_PORTAL_DETECTION)
+#if !BUILDFLAG(ENABLE_CAPTIVE_PORTAL_DETECTION)
 #error This file must be built with ENABLE_CAPTIVE_PORTAL_DETECTION flag.
 #endif
 
 namespace content {
 class WebContents;
 }
 
 namespace net {
 class SSLInfo;
 }
@@ skipping 45 matching lines @@
  private:
   // URL of the login page, opened when the user clicks the "Connect" button.
   const GURL login_url_;
   std::unique_ptr<CertReportHelper> cert_report_helper_;
   base::Callback<void(content::CertificateRequestResultType)> callback_;
 
   DISALLOW_COPY_AND_ASSIGN(CaptivePortalBlockingPage);
 };
 
 #endif  // CHROME_BROWSER_SSL_CAPTIVE_PORTAL_BLOCKING_PAGE_H_