[webkit-reviews] review requested: [Bug 47478] Add 'didDraw' callback for framerate tracking : [Attachment 70562] Patch

[bugzilla-daemon at webkit.org]

Simon Fraser (smfr) <simon.fraser at apple.com> has asked	for review:
Bug 47478: Add 'didDraw' callback for framerate tracking
https://bugs.webkit.org/show_bug.cgi?id=47478

Attachment 70562: Patch
https://bugs.webkit.org/attachment.cgi?id=70562&action=review