Add mute state field to AudioFrame.

webrtc/modules/audio_conference_mixer/test/audio_conference_mixer_unittest.cc

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 111 matching lines @@
     participants[i].fake_frame()->sample_rate_hz_ = kSampleRateHz;
     participants[i].fake_frame()->speech_type_ =  AudioFrame::kNormalSpeech;
     participants[i].fake_frame()->vad_activity_ = AudioFrame::kVadActive;
     participants[i].fake_frame()->num_channels_ = 1;
 
     // Frame duration 10ms.
     participants[i].fake_frame()->samples_per_channel_ = kSampleRateHz / 100;
 
     // We set the 80-th sample value since the first 80 samples may be
     // modified by a ramped-in window.
-    participants[i].fake_frame()->data_[80] = i;
+    participants[i].fake_frame()->mutable_data()[80] = i;
 
     EXPECT_EQ(0, mixer->SetMixabilityStatus(&participants[i], true));
     EXPECT_CALL(participants[i], GetAudioFrame(_, _))
         .Times(AtLeast(1));
     EXPECT_CALL(participants[i], NeededFrequency(_))
         .WillRepeatedly(Return(kSampleRateHz));
   }
 
   // Last participant gives audio frame with passive VAD, although it has the
   // largest energy.
@@ skipping 14 matching lines @@
     } else {
       EXPECT_TRUE(is_mixed) << "Mixing status of Participant #"
                             << i << " wrong.";
     }
   }
 
   EXPECT_EQ(0, mixer->UnRegisterMixedStreamCallback());
 }
 
 }  // namespace webrtc