[Chromium] Test Expectations update after Skia flag changes.

Unreviewed test expectations update.

Apparently, we use Skia to draw some forms on Mac and Win, causing
failures not seen on Linux.

* platform/chromium/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@139448 268f45cc-cd09-0410-ab3c-d52691b4dbfc