Merged r14074 into trunk branch.

ARM: fix dictionary negative lookup.

BUG=171975

R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/13011006

git-svn-id: https://v8.googlecode.com/svn/trunk@14075 ce2b1a6d-e550-0410-aec6-3dcde31c8c00