Enable captive portal detection by default.

chrome/browser/about_flags.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/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 642 matching lines @@
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kEnableDiscoveryInNewTabPage)
   },
   {
     "disable-chrome-to-mobile",  // FLAGS:RECORD_UMA
     IDS_FLAGS_DISABLE_CHROME_TO_MOBILE_NAME,
     IDS_FLAGS_DISABLE_CHROME_TO_MOBILE_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kDisableChromeToMobile)
   },
-  {
-    "enable-captive-portal-detection",
-    IDS_FLAGS_CAPTIVE_PORTAL_CHECK_ON_ERROR_NAME,
-    IDS_FLAGS_CAPTIVE_PORTAL_CHECK_ON_ERROR_DESCRIPTION,
-    kOsMac | kOsWin | kOsLinux | kOsCrOS,
-    SINGLE_VALUE_TYPE(switches::kCaptivePortalDetection)
-  },
 #if defined(GOOGLE_CHROME_BUILD)
   {
     "disable-asynchronous-spellchecking",
     IDS_FLAGS_DISABLE_ASYNCHRONOUS_SPELLCHECKING,
     IDS_FLAGS_DISABLE_ASYNCHRONOUS_SPELLCHECKING_DESCRIPTION,
     kOsWin | kOsLinux | kOsCrOS,
     SINGLE_VALUE_TYPE(switches::kDisableAsynchronousSpellChecking)
   },
 #endif
   {
@@ skipping 611 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags