Implement AudioReceiveStream::GetStats().

webrtc/audio/audio_receive_stream.h

Index: webrtc/audio/audio_receive_stream.h
diff --git a/webrtc/audio/audio_receive_stream.h b/webrtc/audio/audio_receive_stream.h
index 1e5272402026296e04c4aa2e807f9d9f3faaa027..5c77653a75425eb6e5f7560088b0e2b6eedb100a 100644
--- a/webrtc/audio/audio_receive_stream.h
+++ b/webrtc/audio/audio_receive_stream.h
@@ -12,18 +12,23 @@
 #define WEBRTC_AUDIO_AUDIO_RECEIVE_STREAM_H_
 
 #include "webrtc/audio_receive_stream.h"
+#include "webrtc/audio/scoped_voe_interface.h"
+#include "webrtc/base/thread_checker.h"
 #include "webrtc/modules/rtp_rtcp/interface/rtp_header_parser.h"
+#include "webrtc/voice_engine/include/voe_base.h"
 
 namespace webrtc {
 
 class RemoteBitrateEstimator;
+class VoiceEngine;
 
 namespace internal {
 
 class AudioReceiveStream : public webrtc::AudioReceiveStream {
  public:
   AudioReceiveStream(RemoteBitrateEstimator* remote_bitrate_estimator,
-                     const webrtc::AudioReceiveStream::Config& config);
+                     const webrtc::AudioReceiveStream::Config& config,
+                     VoiceEngine* voice_engine);
   ~AudioReceiveStream() override;
 
   // webrtc::ReceiveStream implementation.
@@ -41,8 +46,12 @@ class AudioReceiveStream : public webrtc::AudioReceiveStream {
   const webrtc::AudioReceiveStream::Config& config() const;
 
  private:
+  rtc::ThreadChecker thread_checker_;
   RemoteBitrateEstimator* const remote_bitrate_estimator_;
   const webrtc::AudioReceiveStream::Config config_;
+  VoiceEngine* voice_engine_;
+  // We hold one interface pointer to the VoE to make sure it is kept alive.
+  ScopedVoEInterface<VoEBase> voe_base_;
   rtc::scoped_ptr<RtpHeaderParser> rtp_header_parser_;
 };
 }  // namespace internal