Remove deprecated isFirstPacket member name

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 ba1c6a7f1d7276efdc515a81cd8ab91f609e7a59..4d38c67fe77c9450f70b88704f9d26c0f17a9d1d 100644
--- a/webrtc/modules/include/module_common_types.h
+++ b/webrtc/modules/include/module_common_types.h
@@ -61,10 +61,7 @@ struct RTPVideoHeader {
 
   VideoContentType content_type;
 
-  union {
-    bool is_first_packet_in_frame;
-    RTC_DEPRECATED bool isFirstPacket;  // first packet in frame
-  };
+  bool is_first_packet_in_frame;
   uint8_t simulcastIdx;  // Index if the simulcast encoder creating
                          // this frame, 0 if not using simulcast.
   RtpVideoCodecTypes codec;