Cleanup and adding GetCongestionControlType.

net/quic/quic_protocol.h

Index: net/quic/quic_protocol.h
diff --git a/net/quic/quic_protocol.h b/net/quic/quic_protocol.h
index 69cccd271fc527ed6bd109381f8f1ce731c90bcf..e0c3c048d4f7c3c9eff5cddc17558d17545927ae 100644
--- a/net/quic/quic_protocol.h
+++ b/net/quic/quic_protocol.h
@@ -715,7 +715,17 @@ enum CongestionFeedbackType {
   kTCP,  // Used to mimic TCP.
   kInterArrival,  // Use additional inter arrival information.
   kFixRate,  // Provided for testing.
-  kTCPBBR,  // BBR implementation based on TCP congestion feedback.
+};
+
+// Defines for all types of congestion control algorithms that can be used in
+// QUIC. Note that this is separate from the congestion feedback type -
+// some congestion control algorithms may use the same feedback type
+// (Reno and Cubic are the classic example for that).
+enum CongestionControlType {
+  kCubic,
+  kReno,
+  kFixRateCongestionControl,  // Provided for testing.
+  kBBR,
 };
 
 enum LossDetectionType {