[webkit-reviews] review requested: [Bug 35146] [Qt] Support tiled backing store : [Attachment 49950] updated patch

[bugzilla-daemon at webkit.org]

Antti Koivisto <koivisto at iki.fi> has asked  for review:
Bug 35146: [Qt] Support tiled backing store
https://bugs.webkit.org/show_bug.cgi?id=35146

Attachment 49950: updated patch
https://bugs.webkit.org/attachment.cgi?id=49950&action=review

------- Additional Comments from Antti Koivisto <koivisto at iki.fi>
- switched to IntPoint typedef for tile coordinates, IntPointHash
- implemented bunch of review comments
- fixed a checker painting bug
- various cleanups