Web Inspector: assign Scroll events to rendering category (was painting)
https://bugs.webkit.org/show_bug.cgi?id=113564

Reviewed by Pavel Feldman.

* inspector/front-end/TimelinePresentationModel.js: /ScrollLayer.*category/s/painting/rendering/
(WebInspector.TimelinePresentationModel._initRecordStyles):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147208 268f45cc-cd09-0410-ab3c-d52691b4dbfc