Propagate muted parameter to VoE::Channel

Deleted the temporary ACM method without the muted parameter, and had
to modify several tests for this. The muted parameter is not yet propagated to the AudioConferenceMixer; this is the next step.

BUG=webrtc:5609
TBR=perkj@webrtc.org

Review-Url: https://codereview.webrtc.org/1985743002
Cr-Commit-Position: refs/heads/master@{#12779}
diff --git a/webrtc/modules/audio_coding/test/EncodeDecodeTest.cc b/webrtc/modules/audio_coding/test/EncodeDecodeTest.cc
index e063224..7245023 100644
--- a/webrtc/modules/audio_coding/test/EncodeDecodeTest.cc
+++ b/webrtc/modules/audio_coding/test/EncodeDecodeTest.cc
@@ -208,8 +208,12 @@
 
 bool Receiver::PlayoutData() {
   AudioFrame audioFrame;
-
-  int32_t ok =_acm->PlayoutData10Ms(_frequency, &audioFrame);
+  bool muted;
+  int32_t ok = _acm->PlayoutData10Ms(_frequency, &audioFrame, &muted);
+  if (muted) {
+    ADD_FAILURE();
+    return false;
+  }
   EXPECT_EQ(0, ok);
   if (ok < 0){
     return false;