message: Explicitly deleted move constructors from HpkeKeyBoringSsl.
diff: @@ -40,9 +40,9 @@ class HpkeKeyBoringSsl {
  const google::crypto::tink::HpkeKem& kem,
  absl::string_view recipient_private_key);
  - // HpkeKeyBoringSsl objects are movable, but not copyable.
  - HpkeKeyBoringSsl(HpkeKeyBoringSsl&& other) = default;
  - HpkeKeyBoringSsl& operator=(HpkeKeyBoringSsl&& other) = default;
  + // HpkeKeyBoringSsl objects are neither movable, nor copyable.
  + HpkeKeyBoringSsl(HpkeKeyBoringSsl&& other) = delete;
  + HpkeKeyBoringSsl& operator=(HpkeKeyBoringSsl&& other) = delete;
  HpkeKeyBoringSsl(const HpkeKeyBoringSsl&) = delete;
  HpkeKeyBoringSsl& operator=(const HpkeKeyBoringSsl&) = delete;
  