[webkit-reviews] review requested: [Bug 25238] REGRESSION: Scrollbar hot-tracking drawn incorrectly : [Attachment 29540] patch v1

[bugzilla-daemon at webkit.org]

Peter Kasting <pkasting at google.com> has asked  for review:
Bug 25238: REGRESSION: Scrollbar hot-tracking drawn incorrectly
https://bugs.webkit.org/show_bug.cgi?id=25238

Attachment 29540: patch v1
https://bugs.webkit.org/attachment.cgi?id=29540&action=review

------- Additional Comments from Peter Kasting <pkasting at google.com>
Because we don't draw a hovered state if there's a pressed part, we need to
make sure we invalidate any hovered part when we reset the pressed part, so
that it can begin drawing its hovered state correctly.

(The "half the thumb is hot" effect from before was due to the way the track
and thumb rects overlap, since we were invalidating a track piece.)