Show offline interstitial page when offline and reload when reconnected to network.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 6b4a1d110f0108bd9b1fa9dcbb718d56f831707c..e59a6c0fb311a9433415439693a1da890fb466e2 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -517,6 +517,10 @@
         'browser/chromeos/network_state_notifier.h',
         'browser/chromeos/network_message_observer.cc',
         'browser/chromeos/network_message_observer.h',
+        'browser/chromeos/offline/offline_load_page.cc',
+        'browser/chromeos/offline/offline_load_page.h',
+        'browser/chromeos/offline/offline_load_service.cc',
+        'browser/chromeos/offline/offline_load_service.h',
         'browser/chromeos/options/internet_page_view.cc',
         'browser/chromeos/options/internet_page_view.h',
         'browser/chromeos/options/ip_config_view.cc',
@@ -2054,6 +2058,8 @@
         'browser/renderer_host/gtk_im_context_wrapper.h',
         'browser/renderer_host/gtk_key_bindings_handler.cc',
         'browser/renderer_host/gtk_key_bindings_handler.h',
+        'browser/renderer_host/offline_resource_handler.cc',
+        'browser/renderer_host/offline_resource_handler.h',
         'browser/renderer_host/render_process_host.cc',
         'browser/renderer_host/render_process_host.h',
         'browser/renderer_host/render_sandbox_host_linux.h',
@@ -2796,6 +2802,8 @@
             ['exclude', 'browser/dom_ui/filebrowse_ui.cc'],
             ['exclude', 'browser/dom_ui/mediaplayer_ui.cc'],
             ['exclude', 'browser/dom_ui/slideshow_ui.cc'],
+            ['exclude', 'browser/renderer_host/offline_resource_handler.cc'],
+            ['exclude', 'browser/renderer_host/offline_resource_handler.h'],
           ],
         }],
         ['chromeos==1', {