Parse MedianSlopeFilter-parameters to the correct variables.

BUG=webrtc:6995

Review-Url: https://codereview.webrtc.org/2631293003
Cr-Original-Commit-Position: refs/heads/master@{#16113}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 804ab6f27f7ee0ea4314110dc6e89885ed4f290d
1 file changed