Add mute state field to AudioFrame.

webrtc/modules/audio_coding/test/delay_test.cc

Index: webrtc/modules/audio_coding/test/delay_test.cc
diff --git a/webrtc/modules/audio_coding/test/delay_test.cc b/webrtc/modules/audio_coding/test/delay_test.cc
index 846ac29dc08eccdb99635efaa2e2f3fc960a4f6a..ce244932c82bd1040553a8739710c69c31c686bd 100644
--- a/webrtc/modules/audio_coding/test/delay_test.cc
+++ b/webrtc/modules/audio_coding/test/delay_test.cc
@@ -209,7 +209,7 @@ class DelayTest {
                 acm_b_->PlayoutData10Ms(out_freq_hz_b, &audio_frame, &muted));
       RTC_DCHECK(!muted);
       out_file_b_.Write10MsData(
-          audio_frame.data_,
+          audio_frame.data(),
           audio_frame.samples_per_channel_ * audio_frame.num_channels_);
       received_ts = channel_a2b_->LastInTimestamp();
       rtc::Optional<uint32_t> playout_timestamp = acm_b_->PlayoutTimestamp();