Wire up H264 fmtp sprop-parameter-sets with H264SpsPpsTracker.

webrtc/modules/video_coding/h264_sps_pps_tracker.h

Index: webrtc/modules/video_coding/h264_sps_pps_tracker.h
diff --git a/webrtc/modules/video_coding/h264_sps_pps_tracker.h b/webrtc/modules/video_coding/h264_sps_pps_tracker.h
index b54afbb260614bc42c9ab299919132bcf4725c41..db44ea5f41eaa7108d8e357d8b1d30d849282fcd 100644
--- a/webrtc/modules/video_coding/h264_sps_pps_tracker.h
+++ b/webrtc/modules/video_coding/h264_sps_pps_tracker.h
@@ -14,6 +14,7 @@
 #include <cstdint>
 #include <map>
 #include <memory>
+#include <vector>
 
 #include "webrtc/modules/include/module_common_types.h"
 
@@ -28,6 +29,8 @@ class H264SpsPpsTracker {
   enum PacketAction { kInsert, kDrop, kRequestKeyframe };
 
   PacketAction CopyAndFixBitstream(VCMPacket* packet);
+  void InsertSpsPps(const std::vector<uint8_t>& sps,
+                    const std::vector<uint8_t>& pps);
 
  private:
   struct PpsInfo {