[rtp_rtcp] tmmbr helper simplified by moving set_to_send member out

webrtc/modules/rtp_rtcp/source/tmmbr_help.h

Index: webrtc/modules/rtp_rtcp/source/tmmbr_help.h
diff --git a/webrtc/modules/rtp_rtcp/source/tmmbr_help.h b/webrtc/modules/rtp_rtcp/source/tmmbr_help.h
index c73d53b09a5aa5ac9d7a881061a0831d538d0996..ffafb1409b8c44ce6545c7f90259500f6a46d3d6 100644
--- a/webrtc/modules/rtp_rtcp/source/tmmbr_help.h
+++ b/webrtc/modules/rtp_rtcp/source/tmmbr_help.h
@@ -63,11 +63,9 @@ public:
 
     TMMBRSet* BoundingSet(); // used for debuging
     TMMBRSet* CandidateSet();
-    TMMBRSet* BoundingSetToSend();
 
     TMMBRSet* VerifyAndAllocateCandidateSet(const uint32_t minimumSize);
     int32_t FindTMMBRBoundingSet(TMMBRSet*& boundingSet);
-    int32_t SetTMMBRBoundingSetToSend(const TMMBRSet* boundingSetToSend);
 
     bool IsOwner(const uint32_t ssrc, const uint32_t length) const;
 
@@ -75,15 +73,12 @@ public:
 
 protected:
     TMMBRSet*   VerifyAndAllocateBoundingSet(uint32_t minimumSize);
-    int32_t VerifyAndAllocateBoundingSetToSend(uint32_t minimumSize);
-
     int32_t FindTMMBRBoundingSet(int32_t numCandidates, TMMBRSet& candidateSet);
 
 private:
     rtc::CriticalSection    _criticalSection;
     TMMBRSet                _candidateSet;
     TMMBRSet                _boundingSet;
-    TMMBRSet                _boundingSetToSend;
 
     float*                  _ptrIntersectionBoundingSet;
     float*                  _ptrMaxPRBoundingSet;