NetEq: Implement muted output

webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc

Index: webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc
diff --git a/webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc b/webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc
index 50c24a3b73a0f76c578f64dbc3cf6f9effc003c6..25fa1a7365c05e4528c6634c689883e39e2f6ad4 100644
--- a/webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc
+++ b/webrtc/modules/audio_coding/neteq/neteq_external_decoder_unittest.cc
@@ -189,7 +189,9 @@ class NetEqExternalVsInternalDecoderTest : public NetEqExternalDecoderUnitTest,
 
   void GetAndVerifyOutput() override {
     // Get audio from internal decoder instance.
-    EXPECT_EQ(NetEq::kOK, neteq_internal_->GetAudio(&output_internal_));
+    bool muted;
+    EXPECT_EQ(NetEq::kOK, neteq_internal_->GetAudio(&output_internal_, &muted));
+    ASSERT_FALSE(muted);
     EXPECT_EQ(1u, output_internal_.num_channels_);
     EXPECT_EQ(static_cast<size_t>(kOutputLengthMs * sample_rate_hz_ / 1000),
               output_internal_.samples_per_channel_);