[webkit-reviews] review requested: [Bug 52622] Cache function offsets to speed up javascript parsing : [Attachment 79506] fixes based on oliver's comments

[bugzilla-daemon at webkit.org]

Antti Koivisto <koivisto at iki.fi> has asked  for review:
Bug 52622: Cache function offsets to speed up javascript parsing
https://bugs.webkit.org/show_bug.cgi?id=52622

Attachment 79506: fixes based on oliver's comments
https://bugs.webkit.org/attachment.cgi?id=79506&action=review

------- Additional Comments from Antti Koivisto <koivisto at iki.fi>
- create a cache for all SourceProviders, not just those connected to WebCore
cache
- use setOffset/setLineNumber to restore lexer state