Delete PeerConnectionInterface::BitrateParameters

Replaced by the api struct BitrateSettings, added in
https://webrtc-review.googlesource.com/74020

Bug: None
Change-Id: I8b50b32f5c7a8918fad675904d913a21fd905274
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/177665
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Taylor <deadbeef@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31714}
diff --git a/api/peer_connection_interface.h b/api/peer_connection_interface.h
index 2664af4..fd4d2df 100644
--- a/api/peer_connection_interface.h
+++ b/api/peer_connection_interface.h
@@ -1015,28 +1015,13 @@
   virtual bool RemoveIceCandidates(
       const std::vector<cricket::Candidate>& candidates) = 0;
 
-  // 0 <= min <= current <= max should hold for set parameters.
-  struct BitrateParameters {
-    BitrateParameters();
-    ~BitrateParameters();
-
-    absl::optional<int> min_bitrate_bps;
-    absl::optional<int> current_bitrate_bps;
-    absl::optional<int> max_bitrate_bps;
-  };
-
   // SetBitrate limits the bandwidth allocated for all RTP streams sent by
   // this PeerConnection. Other limitations might affect these limits and
   // are respected (for example "b=AS" in SDP).
   //
   // Setting |current_bitrate_bps| will reset the current bitrate estimate
   // to the provided value.
-  virtual RTCError SetBitrate(const BitrateSettings& bitrate);
-
-  // TODO(nisse): Deprecated - use version above. These two default
-  // implementations require subclasses to implement one or the other
-  // of the methods.
-  virtual RTCError SetBitrate(const BitrateParameters& bitrate_parameters);
+  virtual RTCError SetBitrate(const BitrateSettings& bitrate) = 0;
 
   // Enable/disable playout of received audio streams. Enabled by default. Note
   // that even if playout is enabled, streams will only be played out if the