Add mute state field to AudioFrame.

webrtc/modules/audio_coding/test/TestRedFec.cc

Index: webrtc/modules/audio_coding/test/TestRedFec.cc
diff --git a/webrtc/modules/audio_coding/test/TestRedFec.cc b/webrtc/modules/audio_coding/test/TestRedFec.cc
index 091cc848af7a3573966c0d469abe67ff099a1880..4ec3ed1deac9eeecd3dbca2e988d66b1d354f06a 100644
--- a/webrtc/modules/audio_coding/test/TestRedFec.cc
+++ b/webrtc/modules/audio_coding/test/TestRedFec.cc
@@ -464,7 +464,7 @@ void TestRedFec::Run() {
     bool muted;
     EXPECT_EQ(0, _acmB->PlayoutData10Ms(outFreqHzB, &audioFrame, &muted));
     ASSERT_FALSE(muted);
-    _outFileB.Write10MsData(audioFrame.data_, audioFrame.samples_per_channel_);
+    _outFileB.Write10MsData(audioFrame.data(), audioFrame.samples_per_channel_);
   }
   _inFileA.Rewind();
 }