Revert "Enables PeerConnectionFactory using external fec controller"

This reverts commit 4f07bdb25567d8ef528311e0b50a62c61d543fc3.

Reason for revert: Speculatively reverting, because downstream test is now hitting "PeerConnectionFactory.initialize was not called before creating a PeerConnectionFactory" error, even though it did call initialize. I don't see how any change in this CL could cause that, but it's the only CL on the blamelist, and it does modify PeerConnectionFactory.java

Original change's description:
> 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}

TBR=sakal@webrtc.org,kwiberg@webrtc.org,nisse@webrtc.org,stefan@webrtc.org,yinwa@webrtc.org

Change-Id: I95868c35d6f9973e0ebf563814cd71d0fcbd433d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:8799
Reviewed-on: https://webrtc-review.googlesource.com/54080
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Commit-Queue: Taylor Brandstetter <deadbeef@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22040}

modules/video_coding/generic_encoder.cc

@@ -412,8 +412,7 @@ EncodedImageCallback::Result VCMEncodedFrameCallback::OnEncodedImage(
     return result;
 
   if (media_opt_) {
-    media_opt_->UpdateWithEncodedData(image_copy._length,
-                                      image_copy._frameType);
+    media_opt_->UpdateWithEncodedData(image_copy);
     if (internal_source_) {
       // Signal to encoder to drop next frame.
       result.drop_next_frame = media_opt_->DropFrame();