Allow automatic use of stale cache entries if site is unreachable.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 78403e340c8dba5b34ba878edadfc8c1dae4e28f..0f566ffb2ecaca6188c999ddba0481cf2db91bae 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -325,6 +325,9 @@ const char kEnablePinch[]                   = "enable-pinch";
 // Enables Android-style touch-screen pinch gestures.
 const char kEnableCssTransformPinch[]       = "enable-css-transform-pinch";
 
+// Enables use of cache if offline, even if it's stale
+const char kEnableOfflineCacheAccess[]      = "enable-offline-cache-access";
+
 // Enable caching of pre-parsed JS script data.  See http://crbug.com/32407.
 const char kEnablePreparsedJsCaching[]      = "enable-preparsed-js-caching";