Don't forget to support G722 stereo decoding

webrtc/modules/audio_coding/codecs/g722/audio_decoder_g722.cc

Index: webrtc/modules/audio_coding/codecs/g722/audio_decoder_g722.cc
diff --git a/webrtc/modules/audio_coding/codecs/g722/audio_decoder_g722.cc b/webrtc/modules/audio_coding/codecs/g722/audio_decoder_g722.cc
index d38888f53e634995ed2e954e77c65262e499cd07..f092e516edfe20b345e3fd38cee9208b15b61716 100644
--- a/webrtc/modules/audio_coding/codecs/g722/audio_decoder_g722.cc
+++ b/webrtc/modules/audio_coding/codecs/g722/audio_decoder_g722.cc
@@ -69,23 +69,23 @@ size_t AudioDecoderG722Impl::Channels() const {
   return 1;
 }
 
-AudioDecoderG722Stereo::AudioDecoderG722Stereo() {
+AudioDecoderG722StereoImpl::AudioDecoderG722StereoImpl() {
   WebRtcG722_CreateDecoder(&dec_state_left_);
   WebRtcG722_CreateDecoder(&dec_state_right_);
   WebRtcG722_DecoderInit(dec_state_left_);
   WebRtcG722_DecoderInit(dec_state_right_);
 }
 
-AudioDecoderG722Stereo::~AudioDecoderG722Stereo() {
+AudioDecoderG722StereoImpl::~AudioDecoderG722StereoImpl() {
   WebRtcG722_FreeDecoder(dec_state_left_);
   WebRtcG722_FreeDecoder(dec_state_right_);
 }
 
-int AudioDecoderG722Stereo::DecodeInternal(const uint8_t* encoded,
-                                           size_t encoded_len,
-                                           int sample_rate_hz,
-                                           int16_t* decoded,
-                                           SpeechType* speech_type) {
+int AudioDecoderG722StereoImpl::DecodeInternal(const uint8_t* encoded,
+                                               size_t encoded_len,
+                                               int sample_rate_hz,
+                                               int16_t* decoded,
+                                               SpeechType* speech_type) {
   RTC_DCHECK_EQ(SampleRateHz(), sample_rate_hz);
   int16_t temp_type = 1;  // Default is speech.
   // De-interleave the bit-stream into two separate payloads.
@@ -112,20 +112,20 @@ int AudioDecoderG722Stereo::DecodeInternal(const uint8_t* encoded,
   return static_cast<int>(ret);
 }
 
-int AudioDecoderG722Stereo::SampleRateHz() const {
+int AudioDecoderG722StereoImpl::SampleRateHz() const {
   return 16000;
 }
 
-size_t AudioDecoderG722Stereo::Channels() const {
+size_t AudioDecoderG722StereoImpl::Channels() const {
   return 2;
 }
 
-void AudioDecoderG722Stereo::Reset() {
+void AudioDecoderG722StereoImpl::Reset() {
   WebRtcG722_DecoderInit(dec_state_left_);
   WebRtcG722_DecoderInit(dec_state_right_);
 }
 
-std::vector<AudioDecoder::ParseResult> AudioDecoderG722Stereo::ParsePayload(
+std::vector<AudioDecoder::ParseResult> AudioDecoderG722StereoImpl::ParsePayload(
     rtc::Buffer&& payload,
     uint32_t timestamp) {
   return LegacyEncodedAudioFrame::SplitBySamples(this, std::move(payload),
@@ -134,9 +134,10 @@ std::vector<AudioDecoder::ParseResult> AudioDecoderG722Stereo::ParsePayload(
 
 // Split the stereo packet and place left and right channel after each other
 // in the output array.
-void AudioDecoderG722Stereo::SplitStereoPacket(const uint8_t* encoded,
-                                               size_t encoded_len,
-                                               uint8_t* encoded_deinterleaved) {
+void AudioDecoderG722StereoImpl::SplitStereoPacket(
+    const uint8_t* encoded,
+    size_t encoded_len,
+    uint8_t* encoded_deinterleaved) {
   // Regroup the 4 bits/sample so |l1 l2| |r1 r2| |l3 l4| |r3 r4| ...,
   // where "lx" is 4 bits representing left sample number x, and "rx" right
   // sample. Two samples fit in one byte, represented with |...|.