Version 3.25.28.11 (merged r20501)

Make sure value is a heap number when reusing the double box in BinaryOpICStub.

R=dcarney@chromium.org
BUG=359525

Review URL: https://codereview.chromium.org/230863002

git-svn-id: https://v8.googlecode.com/svn/branches/3.25@20622 ce2b1a6d-e550-0410-aec6-3dcde31c8c00