Viewing cached webpages while offline is not available on Chrome OS

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 7cd9088c635a1dfb9acb32a3d9e702f251b62359..5ae262d7dab57b017a34bbc5ced3420465803a4c 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -259,6 +259,10 @@ const char kDisableIPv6[]                   = "disable-ipv6";
 const char kDisableMinimizeOnSecondLauncherItemClick[] =
     "disable-minimize-on-second-launcher-item-click";
 
+// Disables the new offline error page generated by NetErrorHelper for ChromeOS
+// and instead uses the old error page generated by OfflineResourceThrottle.
+const char kDisableNewOfflineErrorPage[] = "disable-new-offline-error-page";
+
 // Disables the menu on the NTP for accessing sessions from other devices.
 const char kDisableNTPOtherSessionsMenu[]   = "disable-ntp-other-sessions-menu";
 
@@ -457,6 +461,11 @@ const char kEnableNetBenchmarking[]         = "enable-net-benchmarking";
 // Enables the new bookmark app system.
 const char kEnableNewBookmarkApps[] = "enable-new-bookmark-apps";
 
+// Enables the new offline error page generated by NetErrorHelper for ChromeOS
+// and disables the use of the old error page generated by
+// OfflineResourceThrottle.
+const char kEnableNewOfflineErrorPage[] = "enable-new-offline-error-page";
+
 // Enables NPN with HTTP. It means NPN is enabled but SPDY won't be used.
 // HTTP is still used for all requests.
 const char kEnableNpnHttpOnly[]             = "enable-npn-http";
@@ -1366,6 +1375,21 @@ bool SettingsWindowEnabled() {
 #endif
 }
 
+// Will return true as a default value if neither the
+// "enable-new-offline-error-page" nor "disable-new-offline-error-page" is
+// available.
+bool NewOfflineErrorPageEnabled() {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+      ::switches::kEnableNewOfflineErrorPage))
+    return true;
+
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+      ::switches::kDisableNewOfflineErrorPage))
+    return false;
+
+  return true;
+}
+
 #if defined(OS_CHROMEOS)
 bool PowerOverlayEnabled() {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(