Disable allocation folding when allocations tracking is on

BUG=chromium:277984
R=hpayer@chromium.org, loislo@chromium.org, mvstanton@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/32583002

Patch from Alexandra Mikhaylova <amikhaylova@google.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17337 ce2b1a6d-e550-0410-aec6-3dcde31c8c00