[webkit-reviews] review requested: [Bug 61225] Cache XHRs (and other ThreadableLoaderClients) : [Attachment 109674] First reviewable attempt

[bugzilla-daemon at webkit.org]

Nate Chapin <japhet at chromium.org> has asked  for review:
Bug 61225: Cache XHRs (and other ThreadableLoaderClients)
https://bugs.webkit.org/show_bug.cgi?id=61225

Attachment 109674: First reviewable attempt
https://bugs.webkit.org/attachment.cgi?id=109674&action=review

------- Additional Comments from Nate Chapin <japhet at chromium.org>
This handles the plumbing of making DocumentThreadableLoader a
CachedResourceClient, but still always reloads from the network and ignores the
MemoryCache.

I don't see any obvious ways to split this into smaller patches, but I would
love to do so if someone else sees something self-contained.