Wire up FlexFEC in VideoEngine2.

webrtc/media/engine/fakewebrtccall.h

Index: webrtc/media/engine/fakewebrtccall.h
diff --git a/webrtc/media/engine/fakewebrtccall.h b/webrtc/media/engine/fakewebrtccall.h
index 7ff80ce0cc194fa268b95bb541564d35d2e6f268..7f25672b3413bf56edfa18085760fad70c58d08d 100644
--- a/webrtc/media/engine/fakewebrtccall.h
+++ b/webrtc/media/engine/fakewebrtccall.h
@@ -195,6 +195,24 @@ class FakeVideoReceiveStream final : public webrtc::VideoReceiveStream {
   webrtc::VideoReceiveStream::Stats stats_;
 };
 
+class FakeFlexfecReceiveStream final : public webrtc::FlexfecReceiveStream {
+ public:
+  explicit FakeFlexfecReceiveStream(
+      webrtc::FlexfecReceiveStream::Config config);
+
+  const webrtc::FlexfecReceiveStream::Config& GetConfig();
+
+ private:
+  // webrtc::FlexfecReceiveStream implementation.
+  void Start() override;
+  void Stop() override;
+
+  webrtc::FlexfecReceiveStream::Stats GetStats() const override;
+
+  webrtc::FlexfecReceiveStream::Config config_;
+  bool receiving_;
+};
+
 class FakeCall final : public webrtc::Call, public webrtc::PacketReceiver {
  public:
   explicit FakeCall(const webrtc::Call::Config& config);
@@ -209,6 +227,8 @@ class FakeCall final : public webrtc::Call, public webrtc::PacketReceiver {
   const std::vector<FakeAudioReceiveStream*>& GetAudioReceiveStreams();
   const FakeAudioReceiveStream* GetAudioReceiveStream(uint32_t ssrc);
 
+  const std::vector<FakeFlexfecReceiveStream*>& GetFlexfecReceiveStreams();
+
   rtc::SentPacket last_sent_packet() const { return last_sent_packet_; }
 
   // This is useful if we care about the last media packet (with id populated)
@@ -276,6 +296,7 @@ class FakeCall final : public webrtc::Call, public webrtc::PacketReceiver {
   std::vector<FakeAudioSendStream*> audio_send_streams_;
   std::vector<FakeVideoReceiveStream*> video_receive_streams_;
   std::vector<FakeAudioReceiveStream*> audio_receive_streams_;
+  std::vector<FakeFlexfecReceiveStream*> flexfec_receive_streams_;

[stefan-webrtc, 2016/11/17 12:48:59]

std::vector<unique_ptr<...>>?

[brandtr, 2016/11/17 13:23:36]

That would be nice. I'll do that in another CL though, so I can change all the
vectors above too.

[brandtr, 2016/11/21 11:41:13]

See discussion here:
https://codereview.webrtc.org/2511703002/diff/120001/webrtc/media/engine/fake...

 
   int num_created_send_streams_;
   int num_created_receive_streams_;