Merged r19440 into 3.23 branch.

Directly store the transition target on LookupResult in TransitionResult.

BUG=chromium:343964
LOG=N
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/181223002

git-svn-id: https://v8.googlecode.com/svn/branches/3.23@19553 ce2b1a6d-e550-0410-aec6-3dcde31c8c00