Remove stale-while-revalidate from blink

third_party/WebKit/Source/platform/network/HTTPParsers.h

 /*
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 61 matching lines @@
 
 using CommaDelimitedHeaderSet = HashSet<String, CaseFoldingHash>;
 
 struct CacheControlHeader {
   DISALLOW_NEW();
   bool parsed : 1;
   bool containsNoCache : 1;
   bool containsNoStore : 1;
   bool containsMustRevalidate : 1;
   double maxAge;
-  double staleWhileRevalidate;
 
   CacheControlHeader()
       : parsed(false),
         containsNoCache(false),
         containsNoStore(false),
         containsMustRevalidate(false),
-        maxAge(0.0),
-        staleWhileRevalidate(0.0) {}
+        maxAge(0.0) {}
 };
 
 PLATFORM_EXPORT ContentDispositionType getContentDispositionType(const String&);
 PLATFORM_EXPORT bool isValidHTTPHeaderValue(const String&);
 PLATFORM_EXPORT bool isValidHTTPFieldContentRFC7230(const String&);
 // Checks whether the given string conforms to the |token| ABNF production
 // defined in the RFC 7230 or not.
 //
 // The ABNF is for validating octets, but this method takes a String instance
 // for convenience which consists of Unicode code points. When this method sees
@@ skipping 66 matching lines @@
 // |*instance_length| = size in bytes of the object requested
 // If this method returns false, then all of the outputs will be -1.
 PLATFORM_EXPORT bool parseContentRangeHeaderFor206(const String& contentRange,
                                                    int64_t* firstBytePosition,
                                                    int64_t* lastBytePosition,
                                                    int64_t* instanceLength);
 
 }  // namespace blink
 
 #endif