H264SpsPpsTracker class which keep tracks of SPS/PPS.

webrtc/modules/include/module_common_types.h

Index: webrtc/modules/include/module_common_types.h
diff --git a/webrtc/modules/include/module_common_types.h b/webrtc/modules/include/module_common_types.h
index 4e431105966e22448c5c94b20a896e14221abe77..a5ea5c8e2d7da8327573eb74b1795087dd8f0085 100644
--- a/webrtc/modules/include/module_common_types.h
+++ b/webrtc/modules/include/module_common_types.h
@@ -264,6 +264,10 @@ struct NaluInfo {
   uint8_t type;
   int sps_id;
   int pps_id;
+
+  // Offset and size are only valid for non-FuA packets.
+  size_t offset;
+  size_t size;
 };
 
 const size_t kMaxNalusPerPacket = 10;