Roll WebRTC 8099:8100
Roll WebRTC 8099:8100

WebRTC 8099:8100
Changes: https://chromium.googlesource.com/external/webrtc/trunk/webrtc.git/+log/048ecef..9fa719e

This fixes an audio regression in the last couple of canaries.

TBR=tlegrand@chromium.org

Review URL: https://codereview.chromium.org/829453005

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#312186}

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