[webkit-reviews] review requested: [Bug 109646] Constrain fixed layers to the viewport, not the document : [Attachment 187984] Patch

[bugzilla-daemon at webkit.org]

Simon Fraser (smfr) <simon.fraser at apple.com> has asked	for review:
Bug 109646: Constrain fixed layers to the viewport, not the document
https://bugs.webkit.org/show_bug.cgi?id=109646

Attachment 187984: Patch
https://bugs.webkit.org/attachment.cgi?id=187984&action=review