Remove stale-while-revalidate from blink

third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.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) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
     rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
@@ skipping 681 matching lines @@
                                              "max-age=0");
     }
   }
   if (!lastModified.isEmpty()) {
     revalidatingRequest.setHTTPHeaderField(HTTPNames::If_Modified_Since,
                                            lastModified);
   }
   if (!eTag.isEmpty())
     revalidatingRequest.setHTTPHeaderField(HTTPNames::If_None_Match, eTag);
 
-  double stalenessLifetime = resource->stalenessLifetime();
-  if (std::isfinite(stalenessLifetime) && stalenessLifetime > 0) {
-    revalidatingRequest.setHTTPHeaderField(
-        HTTPNames::Resource_Freshness,
-        AtomicString(String::format(
-            "max-age=%.0lf,stale-while-revalidate=%.0lf,age=%.0lf",
-            resource->freshnessLifetime(), stalenessLifetime,
-            resource->currentAge())));
-  }
-
   resource->setRevalidatingRequest(revalidatingRequest);
 }
 
 Resource* ResourceFetcher::createResourceForLoading(
     FetchRequest& request,
     const String& charset,
     const ResourceFactory& factory) {
   const String cacheIdentifier = getCacheIdentifier();
   DCHECK(!memoryCache()->resourceForURL(request.resourceRequest().url(),
                                         cacheIdentifier));
@@ skipping 831 matching lines @@
   visitor->trace(m_context);
   visitor->trace(m_archive);
   visitor->trace(m_loaders);
   visitor->trace(m_nonBlockingLoaders);
   visitor->trace(m_documentResources);
   visitor->trace(m_preloads);
   visitor->trace(m_resourceTimingInfoMap);
 }
 
 }  // namespace blink