Add muted parameter to audio_frame_manipulator methods

BUG=webrtc:5609
NOTRY=True

Review-Url: https://codereview.webrtc.org/1983023002
Cr-Original-Commit-Position: refs/heads/master@{#12788}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 5a216d0489b2374a778c90e657fb71a6def5d1a1
1 file changed