Gardening: Add Mac10.8 (retina) to needed rebase list for test

TBR=enne@chromium.org
BUG=366438

Review URL: https://codereview.chromium.org/258793008

git-svn-id: svn://svn.chromium.org/blink/trunk@172874 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Gardening: Rebase virtual/threaded/transitions/opacity-transform-transitions-inside-iframe.html on Mac10.6

TBR=ericwilligers@chromium.org

Review URL: https://codereview.chromium.org/260433003

git-svn-id: svn://svn.chromium.org/blink/trunk@172875 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Mark location-observe-callback-crash as Pass/Fail in anticipation of disabling Object.observe for M35

TBR=adamk
BUG=367817

Review URL: https://codereview.chromium.org/257223003

git-svn-id: svn://svn.chromium.org/blink/trunk@172876 bbb929c8-8fbe-4397-9dbb-9b2b20218538