Tenure allocation sites only when semi-space is maximum size.

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/309623007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21623 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
%ObjectFreeze needs to exclude non-fast-path objects.

ClusterFuzz will call it with sloppy arguments and similar cases.

BUG=380049
LOG=N
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/315533002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21624 ce2b1a6d-e550-0410-aec6-3dcde31c8c00