interface IL1StandardBridge is IL1ERC20Bridge {
  /**********
   * Events *
   **********/
  event ETHDepositInitiated(
    address indexed _from,
    address indexed _to,
    uint256 _amount,
    bytes _data
  );

  event ETHWithdrawalFinalized(
    address indexed _from,
    address indexed _to,
    uint256 _amount,
    bytes _data
  );

  /********************
   * Public Functions *
   ********************/

  /**
   * @dev Deposit an amount of the ETH to the caller's balance on L2.
   * @param _l2Gas Gas limit required to complete the deposit on L2.
   * @param _data Optional data to forward to L2. This data is provided
   *        solely as a convenience for external contracts. Aside from enforcing a maximum
   *        length, these contracts provide no guarantees about its content.
   */
  function depositETH(uint32 _l2Gas, bytes calldata _data) external payable;

  /**
   * @dev Deposit an amount of ETH to a recipient's balance on L2.
   * @param _to L2 address to credit the withdrawal to.
   * @param _l2Gas Gas limit required to complete the deposit on L2.
   * @param _data Optional data to forward to L2. This data is provided
   *        solely as a convenience for external contracts. Aside from enforcing a maximum
   *        length, these contracts provide no guarantees about its content.
   */
  function depositETHTo(
    address _to,
    uint32 _l2Gas,
    bytes calldata _data
  ) external payable;

  /*************************
   * Cross-chain Functions *
   *************************/

  /**
   * @dev Complete a withdrawal from L2 to L1, and credit funds to the recipient's balance of the
   * L1 ETH token. Since only the xDomainMessenger can call this function, it will never be called
   * before the withdrawal is finalized.
   * @param _from L2 address initiating the transfer.
   * @param _to L1 address to credit the withdrawal to.
   * @param _amount Amount of the ERC20 to deposit.
   * @param _data Optional data to forward to L2. This data is provided
   *        solely as a convenience for external contracts. Aside from enforcing a maximum
   *        length, these contracts provide no guarantees about its content.
   */
  function finalizeETHWithdrawal(
    address _from,
    address _to,
    uint256 _amount,
    bytes calldata _data
  ) external;
}
/**
 * @title IL1StandardBridge
 */
function depositETHTo(
  address _to,
  uint32 _l2Gas,
  bytes calldata _data
) external payable;

/**
 * @dev Deposit an amount of ETH to a recipient's balance on L2.
 * @param _to L2 address to credit the withdrawal to.
 * @param _l2Gas Gas limit required to complete the deposit on L2.
 * @param _data Optional data to forward to L2. This data is provided
 *        solely as a convenience for external contracts. Aside from enforcing a maximum
 *        length, these contracts provide no guarantees about its content.
 */