Initial implementation of Chrome-Freshness header.

net/http/http_response_headers.h

Index: net/http/http_response_headers.h
diff --git a/net/http/http_response_headers.h b/net/http/http_response_headers.h
index 2d306c95ca048aaa4dad94528c2f87a819c11d5d..115ad10071f72fb504b32784816ad38b87b2e5a2 100644
--- a/net/http/http_response_headers.h
+++ b/net/http/http_response_headers.h
@@ -229,6 +229,10 @@ class NET_EXPORT HttpResponseHeaders
   bool GetDateValue(base::Time* value) const;
   bool GetLastModifiedValue(base::Time* value) const;
   bool GetExpiresValue(base::Time* value) const;
+  bool GetStaleWhileRevalidateValue(base::TimeDelta* value) const;
+
+  bool GetCacheControlDirective(const base::StringPiece& directive,

[rvargas (doing something else), 2014/07/28 19:24:01]

If we keep this declaration here we need documentation about what it does and
how to use it.

It may be better to make this a private member (just because there is no need so
far for consumers to call this directly). In that case, the doc can be more
sparse.

[Adam Rice, 2014/07/29 17:04:45]

I originally had it public just because there are lots of similar public
methods. I've moved it to private.

+                                base::TimeDelta* result) const;
 
   // Extracts the time value of a particular header.  This method looks for the
   // first matching header value and parses its value as a HTTP-date.