diff --git a/quic/core/quic_data_reader.h b/quic/core/quic_data_reader.h
index 40ad4fc..08366b9 100644
--- a/quic/core/quic_data_reader.h
+++ b/quic/core/quic_data_reader.h
@@ -12,6 +12,7 @@
 #include "net/third_party/quiche/src/quic/platform/api/quic_export.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_endian.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"
+#include "net/third_party/quiche/src/common/quiche_data_reader.h"
 
 namespace quic {
 
@@ -29,7 +30,7 @@
 // trusted and it is up to the caller to throw away the failed instance and
 // handle the error as appropriate. None of the Read*() methods should ever be
 // called after failure, as they will also fail immediately.
-class QUIC_EXPORT_PRIVATE QuicDataReader {
+class QUIC_EXPORT_PRIVATE QuicDataReader : public quiche::QuicheDataReader {
  public:
   // Constructs a reader using NETWORK_BYTE_ORDER endianness.
   // Caller must provide an underlying buffer to work on.
@@ -48,38 +49,11 @@
   // Empty destructor.
   ~QuicDataReader() {}
 
-  // Reads an 8/16/32/64-bit unsigned integer into the given output
-  // parameter. Forwards the internal iterator on success. Returns true on
-  // success, false otherwise.
-  bool ReadUInt8(uint8_t* result);
-  bool ReadUInt16(uint16_t* result);
-  bool ReadUInt32(uint32_t* result);
-  bool ReadUInt64(uint64_t* result);
-
-  // Set |result| to 0, then read |num_bytes| bytes in the correct byte order
-  // into least significant bytes of |result|.
-  bool ReadBytesToUInt64(size_t num_bytes, uint64_t* result);
-
   // Reads a 16-bit unsigned float into the given output parameter.
   // Forwards the internal iterator on success.
   // Returns true on success, false otherwise.
   bool ReadUFloat16(uint64_t* result);
 
-  // Reads a string prefixed with 16-bit length into the given output parameter.
-  //
-  // NOTE: Does not copy but rather references strings in the underlying buffer.
-  // This should be kept in mind when handling memory management!
-  //
-  // Forwards the internal iterator on success.
-  // Returns true on success, false otherwise.
-  bool ReadStringPiece16(quiche::QuicheStringPiece* result);
-
-  // Reads a given number of bytes into the given buffer. The buffer
-  // must be of adequate size.
-  // Forwards the internal iterator on success.
-  // Returns true on success, false otherwise.
-  bool ReadStringPiece(quiche::QuicheStringPiece* result, size_t len);
-
   // Reads connection ID into the given output parameter.
   // Forwards the internal iterator on success.
   // Returns true on success, false otherwise.
@@ -90,70 +64,10 @@
   // Returns true on success, false otherwise.
   bool ReadLengthPrefixedConnectionId(QuicConnectionId* connection_id);
 
-  // Reads tag represented as 32-bit unsigned integer into given output
-  // parameter. Tags are in big endian on the wire (e.g., CHLO is
-  // 'C','H','L','O') and are read in byte order, so tags in memory are in big
-  // endian.
-  bool ReadTag(uint32_t* tag);
-
-  // Returns the remaining payload as a quiche::QuicheStringPiece.
-  //
-  // NOTE: Does not copy but rather references strings in the underlying buffer.
-  // This should be kept in mind when handling memory management!
-  //
-  // Forwards the internal iterator.
-  quiche::QuicheStringPiece ReadRemainingPayload();
-
-  // Returns the remaining payload as a quiche::QuicheStringPiece.
-  //
-  // NOTE: Does not copy but rather references strings in the underlying buffer.
-  // This should be kept in mind when handling memory management!
-  //
-  // DOES NOT forward the internal iterator.
-  quiche::QuicheStringPiece PeekRemainingPayload() const;
-
-  // Returns the entire payload as a quiche::QuicheStringPiece.
-  //
-  // NOTE: Does not copy but rather references strings in the underlying buffer.
-  // This should be kept in mind when handling memory management!
-  //
-  // DOES NOT forward the internal iterator.
-  quiche::QuicheStringPiece FullPayload() const;
-
-  // Reads a given number of bytes into the given buffer. The buffer
-  // must be of adequate size.
-  // Forwards the internal iterator on success.
-  // Returns true on success, false otherwise.
-  bool ReadBytes(void* result, size_t size);
-
-  // Skips over |size| bytes from the buffer and forwards the internal iterator.
-  // Returns true if there are at least |size| bytes remaining to read, false
-  // otherwise.
-  bool Seek(size_t size);
-
-  // Returns true if the entirety of the underlying buffer has been read via
-  // Read*() calls.
-  bool IsDoneReading() const;
-
   // Returns the length in bytes of a variable length integer based on the next
   // two bits available. Returns 1, 2, 4, or 8 on success, and 0 on failure.
   QuicVariableLengthIntegerLength PeekVarInt62Length();
 
-  // Returns the number of bytes remaining to be read.
-  size_t BytesRemaining() const;
-
-  // Truncates the reader down by reducing its internal length.
-  // If called immediately after calling this, BytesRemaining will
-  // return |truncation_length|. If truncation_length is less than the
-  // current value of BytesRemaining, this does nothing and returns false.
-  bool TruncateRemaining(size_t truncation_length);
-
-  // 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;
-
   // Read an IETF-encoded Variable Length Integer and place the result
   // in |*result|.
   // Returns true if it works, false if not. The only error is that
@@ -168,29 +82,6 @@
   // returns false if there is a read error or if the value is
   // greater than (2^32)-1.
   bool ReadVarIntU32(uint32_t* result);
-
-  std::string DebugString() const;
-
- private:
-  // Returns true if the underlying buffer has enough room to read the given
-  // amount of bytes.
-  bool CanRead(size_t bytes) const;
-
-  // To be called when a read fails for any reason.
-  void OnFailure();
-
-  // TODO(fkastenholz, b/73004262) change buffer_, et al, to be uint8_t, not
-  // char. The data buffer that we're reading from.
-  const char* data_;
-
-  // The length of the data buffer that we're reading from.
-  size_t len_;
-
-  // The location of the next read from our data buffer.
-  size_t pos_;
-
-  // The endianness to read integers and floating numbers.
-  quiche::Endianness endianness_;
 };
 
 }  // namespace quic