Moved Opus-specific payload splitting into AudioDecoderOpus.

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 f46ccd386296fd0073141a7d0b1b246d96db47a7..3f3de80290c2621312e526faf2c2dcc6c771a700 100644
--- a/webrtc/modules/audio_coding/codecs/g722/audio_decoder_g722.cc
+++ b/webrtc/modules/audio_coding/codecs/g722/audio_decoder_g722.cc
@@ -50,10 +50,9 @@ void AudioDecoderG722::Reset() {
 
 std::vector<AudioDecoder::ParseResult> AudioDecoderG722::ParsePayload(
     rtc::Buffer* payload,
-    uint32_t timestamp,
-    bool is_primary) {
-  return LegacyEncodedAudioFrame::SplitBySamples(this, payload, timestamp,
-                                                 is_primary, 8, 16);
+    uint32_t timestamp) {
+  return LegacyEncodedAudioFrame::SplitBySamples(this, payload, timestamp, 8,
+                                                 16);
 }
 
 int AudioDecoderG722::PacketDuration(const uint8_t* encoded,
@@ -128,10 +127,9 @@ void AudioDecoderG722Stereo::Reset() {
 
 std::vector<AudioDecoder::ParseResult> AudioDecoderG722Stereo::ParsePayload(
     rtc::Buffer* payload,
-    uint32_t timestamp,
-    bool is_primary) {
+    uint32_t timestamp) {
   return LegacyEncodedAudioFrame::SplitBySamples(this, payload, timestamp,
-                                                 is_primary, 2 * 8, 16);
+                                                 2 * 8, 16);
 }
 
 // Split the stereo packet and place left and right channel after each other