"Rather then" instead of "rather than." TBR=zhihuang@webrtc.org NOTRY=True Bug: None Change-Id: Iaeb2d5d1f2ad539fbbc1a41c95c478b302cb3f9a Reviewed-on: https://webrtc-review.googlesource.com/59426 Commit-Queue: Taylor Brandstetter <deadbeef@webrtc.org> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22274}