Switch between online and offline version per network connection

chrome/chrome_browser.gypi

 # Copyright 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 1460 matching lines @@
       'browser/bookmarks/startup_task_runner_service_factory.cc',
       'browser/bookmarks/startup_task_runner_service_factory.h',
     ],
     'chrome_browser_offline_pages_sources': [
       'browser/android/offline_pages/offline_page_bridge.cc',
       'browser/android/offline_pages/offline_page_bridge.h',
       'browser/android/offline_pages/offline_page_mhtml_archiver.cc',
       'browser/android/offline_pages/offline_page_mhtml_archiver.h',
       'browser/android/offline_pages/offline_page_model_factory.cc',
       'browser/android/offline_pages/offline_page_model_factory.h',
+      'browser/android/offline_pages/offline_page_tab_helper.cc',
+      'browser/android/offline_pages/offline_page_tab_helper.h',
       'browser/android/offline_pages/offline_page_utils.cc',
       'browser/android/offline_pages/offline_page_utils.h',
     ],
     'chrome_browser_browser_process_sources': [
       'browser/browser_process.cc',
       'browser/browser_process.h',
       'browser/browser_process_impl.cc',
       'browser/browser_process_impl.h',
       'browser/browser_process_platform_part.h',
       'browser/browser_process_platform_part_android.cc',
@@ skipping 2708 matching lines @@
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
             'common',
           ],
         },
       ],
     }],
   ],
 }