Structure of BBR's implementation,some main classes and functions which are going to be used

webrtc/modules/remote_bitrate_estimator/test/bwe.h

Index: webrtc/modules/remote_bitrate_estimator/test/bwe.h
diff --git a/webrtc/modules/remote_bitrate_estimator/test/bwe.h b/webrtc/modules/remote_bitrate_estimator/test/bwe.h
index 89a28acb4ee0768ac32aa9d36169e8bde569e415..5ff119075893f33dc6d17ab20498631f95bfa2a7 100644
--- a/webrtc/modules/remote_bitrate_estimator/test/bwe.h
+++ b/webrtc/modules/remote_bitrate_estimator/test/bwe.h
@@ -177,10 +177,11 @@ enum BandwidthEstimatorType {
   kNadaEstimator,
   kRembEstimator,
   kSendSideEstimator,
-  kTcpEstimator
+  kTcpEstimator,
+  kBbrEstimator
 };
 
-const char* const bwe_names[] = {"Null", "NADA", "REMB", "GCC", "TCP"};
+const char* const bwe_names[] = {"Null", "NADA", "REMB", "GCC", "TCP", "BBR"};
 
 int64_t GetAbsSendTimeInMs(uint32_t abs_send_time);