Port r11391 (789b1078)

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10124013
Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11401 ce2b1a6d-e550-0410-aec6-3dcde31c8c00