Added pretenuring support for call new.

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/16226012

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14935 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove V8_USE_OLD_STYLE_PERSISTENT_HANDLE_VISITORS.

Blink has migrated to use the new style visitors.

BUG=
R=dcarney@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/16360005

Patch from Marja Hölttä <marja@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14936 ce2b1a6d-e550-0410-aec6-3dcde31c8c00