The stroked outlines for rectangles drawn via PlatformContext::drawRect() in Chromium are missing. This was introduced in https://bugs.webkit.org/show_bug.cgi?id=24662 (r41805), and the affected tests were rebaselined with the outlines missing in http://codereview.chromium.org/46097.
Created attachment 29466 [details] Fix for Chromium drawRect() issue.
Created attachment 29468 [details] Slight fix to avoid overdraw. Slight fix to previous: don't draw corners twice (might cause a problem with alpha on).
Comment on attachment 29468 [details] Slight fix to avoid overdraw. Missing bug URL in ChangeLog.
Created attachment 29479 [details] Fixed changelog.
Landed as: http://trac.webkit.org/changeset/42547