angular/angular.js — pull request #10061 by caitp (2014-11-14 15:15:48+00:00)
Title: perf(orderBy): copy array with slice instead of for loop

Lets see if this can be backported (I mostly just want to keep tests in synch)

Use array slice method to copy entire array instead of a for loop
http://jsperf.com/new-array-vs-splice-vs-slice/54