Delete method EncodedFrame::GetBitstream, part 2

Bug: webrtc:9378
Change-Id: Ic26f731aa17f47587491c918244a952098e33913
Reviewed-on: https://webrtc-review.googlesource.com/c/112287
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25839}

api/video/encoded_frame.cc

@@ -13,10 +13,6 @@
 namespace webrtc {
 namespace video_coding {
 
-bool EncodedFrame::GetBitstream(uint8_t* destination) const {
-  return false;
-}
-
 bool EncodedFrame::delayed_by_retransmission() const {
   return 0;
 }

api/video/encoded_frame.h

@@ -59,10 +59,6 @@ class EncodedFrame : public webrtc::VCMEncodedFrame {
   EncodedFrame() = default;
   virtual ~EncodedFrame() {}
 
-  // TODO(nisse): Deprecated and unused. Delete method and default
-  // implementation as soon as downstream overrides are deleted.
-  virtual bool GetBitstream(uint8_t* destination) const;
-
   // When this frame was received.
   virtual int64_t ReceivedTime() const = 0;