This is useful for users who overwrite Error.prepareStackTrace but want to use
this functionality for formatting the individual frames.

BUG=NONE
TEST=NONE

Review URL: https://chromiumcodereview.appspot.com/10388140


Review URL: https://chromiumcodereview.appspot.com/10332172

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11568 ce2b1a6d-e550-0410-aec6-3dcde31c8c00