message: Internal cleanup for ByteCount() return type.
diff: @@ -472,9 +472,7 @@ class FileStream : public ::tensorflow::protobuf::io::ZeroCopyInputStream {
  pos_ += count;
  return true;
  }
  - int64_t ByteCount() const override {
  - return pos_;
  - }
  + int64_t ByteCount() const override { return pos_; }
  Status status() const { return status_; }
  bool Next(const void** data, int* size) override {
  