Add mute state field to AudioFrame.

webrtc/modules/audio_coding/test/insert_packet_with_timing.cc

Index: webrtc/modules/audio_coding/test/insert_packet_with_timing.cc
diff --git a/webrtc/modules/audio_coding/test/insert_packet_with_timing.cc b/webrtc/modules/audio_coding/test/insert_packet_with_timing.cc
index 44ef9df7d9fa94f03461b57077560dcf298fe0dd..4fa4e5276c943f30780abaca3ed41cdfc6baabe3 100644
--- a/webrtc/modules/audio_coding/test/insert_packet_with_timing.cc
+++ b/webrtc/modules/audio_coding/test/insert_packet_with_timing.cc
@@ -147,7 +147,7 @@ class InsertPacketWithTiming {
       receive_acm_->PlayoutData10Ms(static_cast<int>(FLAGS_output_fs_hz),
                                     &frame_, &muted);
       ASSERT_FALSE(muted);
-      fwrite(frame_.data_, sizeof(frame_.data_[0]),
+      fwrite(frame_.data(), sizeof(*frame_.data()),
              frame_.samples_per_channel_ * frame_.num_channels_, pcm_out_fid_);
       *action |= kAudioPlayedOut;
     }