Provide "freeBuffer()" primitive for testing under ASan.

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/85883002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18091 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Avoid useless #ifdef DEBUG checks for the --trace-ic flag.

FLAG_trace_ic is constant false in non-DEBUG builds anyways.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/91003002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18092 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Split Persistent into Persistent and UniquePersistent

R=svenpanne@chromium.org

BUG=

Review URL: https://codereview.chromium.org/88013002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18093 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add ES specification reference to DateNow.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/89353002

Patch from Victor Costan <costan@gmail.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18094 ce2b1a6d-e550-0410-aec6-3dcde31c8c00