Enables PeerConnectionFactory using external fec controller

Bug: webrtc:8799
Change-Id: Ieb2cf6163b9a83844ab9ed4822b4a7f1db4c24b8
Reviewed-on: https://webrtc-review.googlesource.com/43961
Commit-Queue: Ying Wang <yinwa@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22038}

modules/video_coding/media_optimization.h

@@ -51,7 +51,8 @@ class MediaOptimization {
   // Informs Media Optimization of encoded output.
   // TODO(perkj): Deprecate SetEncodingData once its not used for stats in
   // VideoStreamEncoder.
-  void UpdateWithEncodedData(const EncodedImage& encoded_image);
+  void UpdateWithEncodedData(const size_t encoded_image_length,
+                             const FrameType encoded_image_frametype);
 
   // InputFrameRate 0 = no frame rate estimate available.
   uint32_t InputFrameRate();