[webkit-reviews] review requested: [Bug 37874] Provide mechanism to cache metadata for a resource : [Attachment 54021] Added CacheableMetadata struct per abarth's recommendation

[bugzilla-daemon at webkit.org]

Tony Gentilcore <tonyg at chromium.org> has asked	for review:
Bug 37874: Provide mechanism to cache metadata for a resource
https://bugs.webkit.org/show_bug.cgi?id=37874

Attachment 54021: Added CacheableMetadata struct per abarth's recommendation
https://bugs.webkit.org/attachment.cgi?id=54021&action=review