[webkit-reviews] review requested: [Bug 13487] Implement O(1) absoluteClippedOverflowRect and absoluteOutlineBox during layout for a possible speed gain : [Attachment 14243] Keep track of absolute translation and clip during layout

[bugzilla-daemon at webkit.org]

mitz at webkit.org has asked  for review:
Bug 13487: Implement O(1) absoluteClippedOverflowRect and absoluteOutlineBox
during layout for a possible speed gain
http://bugs.webkit.org/show_bug.cgi?id=13487

Attachment 14243: Keep track of absolute translation and clip during layout
http://bugs.webkit.org/attachment.cgi?id=14243&action=edit

------- Additional Comments from mitz at webkit.org
Includes change log, new test results (eliminated some excessive repainting)
and one new test.