Add mute state field to AudioFrame.

webrtc/modules/audio_coding/acm2/audio_coding_module_unittest.cc

Index: webrtc/modules/audio_coding/acm2/audio_coding_module_unittest.cc
diff --git a/webrtc/modules/audio_coding/acm2/audio_coding_module_unittest.cc b/webrtc/modules/audio_coding/acm2/audio_coding_module_unittest.cc
index e8a6c398e2a3354d26578d1a00a356bf0ebf669d..5b9ec99b86035e9f12492df322477783f7659981 100644
--- a/webrtc/modules/audio_coding/acm2/audio_coding_module_unittest.cc
+++ b/webrtc/modules/audio_coding/acm2/audio_coding_module_unittest.cc
@@ -175,9 +175,7 @@ class AudioCodingModuleTestOldApi : public ::testing::Test {
     input_frame_.samples_per_channel_ = kSampleRateHz * 10 / 1000;  // 10 ms.
     static_assert(kSampleRateHz * 10 / 1000 <= AudioFrame::kMaxDataSizeSamples,
                   "audio frame too small");
-    memset(input_frame_.data_,
-           0,
-           input_frame_.samples_per_channel_ * sizeof(input_frame_.data_[0]));
+    input_frame_.Mute();
 
     ASSERT_EQ(0, acm_->RegisterTransportCallback(&packet_cb_));
 
@@ -698,7 +696,7 @@ class AcmIsacMtTestOldApi : public AudioCodingModuleMtTestOldApi {
     // TODO(kwiberg): Use std::copy here. Might be complications because AFAICS
     // this call confuses the number of samples with the number of bytes, and
     // ends up copying only half of what it should.
-    memcpy(input_frame_.data_, audio_loop_.GetNextBlock().data(),
+    memcpy(input_frame_.mutable_data(), audio_loop_.GetNextBlock().data(),
            kNumSamples10ms);
     AudioCodingModuleTestOldApi::InsertAudio();
   }