Add mute state field to AudioFrame.

webrtc/modules/audio_mixer/frame_combiner_unittest.cc

Index: webrtc/modules/audio_mixer/frame_combiner_unittest.cc
diff --git a/webrtc/modules/audio_mixer/frame_combiner_unittest.cc b/webrtc/modules/audio_mixer/frame_combiner_unittest.cc
index 13c66012f99f27c4fd30d820e19c0166fcf3d1f6..80b2798213ec9c840f8ad829bbc12f356b3ea60d 100644
--- a/webrtc/modules/audio_mixer/frame_combiner_unittest.cc
+++ b/webrtc/modules/audio_mixer/frame_combiner_unittest.cc
@@ -95,9 +95,11 @@ TEST(FrameCombiner, CombiningZeroFramesShouldProduceSilence) {
       combiner.Combine(frames_to_combine, number_of_channels, rate,
                        &audio_frame_for_mixing);
 
+      const int16_t* audio_frame_for_mixing_data =
+          audio_frame_for_mixing.data();
       const std::vector<int16_t> mixed_data(
-          audio_frame_for_mixing.data_,
-          audio_frame_for_mixing.data_ + number_of_channels * rate / 100);
+          audio_frame_for_mixing_data,
+          audio_frame_for_mixing_data + number_of_channels * rate / 100);
 
       const std::vector<int16_t> expected(number_of_channels * rate / 100, 0);
       EXPECT_EQ(mixed_data, expected);
@@ -112,15 +114,17 @@ TEST(FrameCombiner, CombiningOneFrameShouldNotChangeFrame) {
       SCOPED_TRACE(ProduceDebugText(rate, number_of_channels, 1));
 
       SetUpFrames(rate, number_of_channels);
-      std::iota(frame1.data_, frame1.data_ + number_of_channels * rate / 100,
-                0);
+      int16_t* frame1_data = frame1.mutable_data();
+      std::iota(frame1_data, frame1_data + number_of_channels * rate / 100, 0);
       const std::vector<AudioFrame*> frames_to_combine = {&frame1};
       combiner.Combine(frames_to_combine, number_of_channels, rate,
                        &audio_frame_for_mixing);
 
+      const int16_t* audio_frame_for_mixing_data =
+          audio_frame_for_mixing.data();
       const std::vector<int16_t> mixed_data(
-          audio_frame_for_mixing.data_,
-          audio_frame_for_mixing.data_ + number_of_channels * rate / 100);
+          audio_frame_for_mixing_data,
+          audio_frame_for_mixing_data + number_of_channels * rate / 100);
 
       std::vector<int16_t> expected(number_of_channels * rate / 100);
       std::iota(expected.begin(), expected.end(), 0);