std::random_shuffle will be removed in C++17. Bug: None Change-Id: Ia2f80d55b1091848787f947b521b9d76cdd5e536 No-Try: True Reviewed-on: https://webrtc-review.googlesource.com/38380 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21542}