We can iterate a scan on scavange page if it was precisely swept or just added to the old generation.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/374073002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add vogelheim@ to v8 OWNERS

R=danno@chromium.org, vogelheim@chromium.org
LOG=n
BUG=none

Review URL: https://codereview.chromium.org/377933002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22280 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/bleeding_edge' into bleeding_edge