Let QUIC_VERSION_38 support IETF PADDING frame (1 byte frame with type 0x00) and respect NSTP conne…

net/quic/core/quic_data_reader.h

Index: net/quic/core/quic_data_reader.h
diff --git a/net/quic/core/quic_data_reader.h b/net/quic/core/quic_data_reader.h
index 9507ec19bf489a011de23ca9aac4341278cfd74d..ffce87f5b6d1932f0734a6a141eeb34875582ddc 100644
--- a/net/quic/core/quic_data_reader.h
+++ b/net/quic/core/quic_data_reader.h
@@ -118,6 +118,12 @@ class QUIC_EXPORT_PRIVATE QuicDataReader {
   // Returns the number of bytes remaining to be read.
   size_t BytesRemaining() const;
 
+  // Returns the next byte that to be read. Must not be called when there are no
+  // bytes to be read.
+  //
+  // DOES NOT forward the internal iterator.
+  uint8_t PeekByte() const;
+
  private:
   // Returns true if the underlying buffer has enough room to read the given
   // amount of bytes.