Remove stale-while-revalidate from blink

third_party/WebKit/Source/platform/loader/fetch/Resource.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
     rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
@@ skipping 506 matching lines @@
     return (creationTime - lastModifiedValue) * 0.1;
   // If no cache headers are present, the specification leaves the decision to
   // the UA. Other browsers seem to opt for 0.
   return 0;
 }
 
 double Resource::freshnessLifetime() const {
   return blink::freshnessLifetime(response(), m_responseTimestamp);
 }
 
-double Resource::stalenessLifetime() const {
-  return response().cacheControlStaleWhileRevalidate();
-}
-
 static bool canUseResponse(const ResourceResponse& response,
                            double responseTimestamp) {
   if (response.isNull())
     return false;
 
   // FIXME: Why isn't must-revalidate considered a reason we can't use the
   // response?
   if (response.cacheControlContainsNoCache() ||
       response.cacheControlContainsNoStore())
     return false;
@@ skipping 581 matching lines @@
     case Resource::Media:
     case Resource::Manifest:
     case Resource::Mock:
       return false;
   }
   NOTREACHED();
   return false;
 }
 
 }  // namespace blink