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

webrtc/modules/remote_bitrate_estimator/test/packet.h

Index: webrtc/modules/remote_bitrate_estimator/test/packet.h
diff --git a/webrtc/modules/remote_bitrate_estimator/test/packet.h b/webrtc/modules/remote_bitrate_estimator/test/packet.h
index c9680c6fcd20907f157afc1421e71349c70fcdb7..310e5d2b5d8a5b74dea032672f8328d72c8381a5 100644
--- a/webrtc/modules/remote_bitrate_estimator/test/packet.h
+++ b/webrtc/modules/remote_bitrate_estimator/test/packet.h
@@ -14,6 +14,7 @@
 #include <list>
 #include <map>
 #include <vector>
+#include <utility>
 
 #include "webrtc/common_types.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
@@ -108,6 +109,24 @@ class FeedbackPacket : public Packet {
   int64_t latest_send_time_ms_;  // Time stamp for the latest sent FbPacket.
 };
 
+class BbrBweFeedback : public FeedbackPacket {
+ public:
+  BbrBweFeedback(
+      int flow_id,
+      int64_t send_time_us,
+      int64_t latest_send_time_ms,
+      const std::vector<std::pair<uint64_t, int64_t> >& packet_feedback_vector);
+  virtual ~BbrBweFeedback() {}
+
+  const std::vector<std::pair<uint64_t, int64_t> >& packet_feedback_vector()
+      const {
+    return packet_feedback_vector_;
+  }
+
+ private:
+  const std::vector<std::pair<uint64_t, int64_t> > packet_feedback_vector_;
+};
+
 class RembFeedback : public FeedbackPacket {
  public:
   RembFeedback(int flow_id,