Version 3.28.71.9 (merged r23691)

Enforce correct number comparisons when inlining Array.indexOf.

BUG=407946
LOG=N
R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/553373002

git-svn-id: https://v8.googlecode.com/svn/branches/3.28@23817 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Skip slow webkit test.

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/559983002

git-svn-id: https://v8.googlecode.com/svn/branches/3.28@23836 ce2b1a6d-e550-0410-aec6-3dcde31c8c00