Moved codec-specific audio packet splitting into decoders.

webrtc/modules/audio_coding/codecs/g711/audio_decoder_pcm.cc

Index: webrtc/modules/audio_coding/codecs/g711/audio_decoder_pcm.cc
diff --git a/webrtc/modules/audio_coding/codecs/g711/audio_decoder_pcm.cc b/webrtc/modules/audio_coding/codecs/g711/audio_decoder_pcm.cc
index af164c4bb72b0b25525b3999f3e6887390a0b802..4e829355539dca1463c1e04765df9bce844b6077 100644
--- a/webrtc/modules/audio_coding/codecs/g711/audio_decoder_pcm.cc
+++ b/webrtc/modules/audio_coding/codecs/g711/audio_decoder_pcm.cc
@@ -10,12 +10,18 @@
 
 #include "webrtc/modules/audio_coding/codecs/g711/audio_decoder_pcm.h"
 
+#include "webrtc/modules/audio_coding/codecs/split_by_samples.h"
 #include "webrtc/modules/audio_coding/codecs/g711/g711_interface.h"
 
 namespace webrtc {
 
 void AudioDecoderPcmU::Reset() {}
 
+std::vector<AudioDecoder::PacketSplit> AudioDecoderPcmU::SplitPacket(
+    rtc::ArrayView<const uint8_t> payload) const {
+  return internal::SplitBySamples(payload, 8 * num_channels_, 8);
+}
+
 int AudioDecoderPcmU::SampleRateHz() const {
   return 8000;
 }
@@ -44,6 +50,11 @@ int AudioDecoderPcmU::PacketDuration(const uint8_t* encoded,
 
 void AudioDecoderPcmA::Reset() {}
 
+std::vector<AudioDecoder::PacketSplit> AudioDecoderPcmA::SplitPacket(
+    rtc::ArrayView<const uint8_t> payload) const {
+  return internal::SplitBySamples(payload, 8 * num_channels_, 8);
+}
+
 int AudioDecoderPcmA::SampleRateHz() const {
   return 8000;
 }