Clean up the redundant Int32Constant check which is covered by double case
Clean up the redundant Int32Constant check which is covered by double case

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/22815032

Patch from Weiliang Lin <weiliang.lin2@gmail.com>.

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@16282 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh