Adapt encoder behavior to target bitrate

remoting/codec/video_encoder.h

Index: remoting/codec/video_encoder.h
diff --git a/remoting/codec/video_encoder.h b/remoting/codec/video_encoder.h
index 99018f7d4e6c4ad2cde7cd2454722576f1f06351..e7de360b12383ac2440684d05bef1814992711f8 100644
--- a/remoting/codec/video_encoder.h
+++ b/remoting/codec/video_encoder.h
@@ -34,6 +34,8 @@ class VideoEncoder {
   // there is no work to do.
   virtual std::unique_ptr<VideoPacket> Encode(const webrtc::DesktopFrame& frame,
                                               uint32_t flags) = 0;
+
+  virtual void UpdateTargetBitrate(uint32_t bitrate) {}
 };
 
 }  // namespace remoting