contracts-bedrock: add L2ToL2CrossDomainMessenger to Setup.sol

packages/contracts-bedrock/test/setup/Setup.sol

@@ -35,6 +35,7 @@ import { Executables } from "scripts/Executables.sol";
 import { Vm } from "forge-std/Vm.sol";
 import { SuperchainConfig } from "src/L1/SuperchainConfig.sol";
 import { DataAvailabilityChallenge } from "src/L1/DataAvailabilityChallenge.sol";
+import { IL2ToL2CrossDomainMessenger } from "src/L2/IL2ToL2CrossDomainMessenger.sol";
 
 /// @title Setup
 /// @dev This contact is responsible for setting up the contracts in state. It currently
@@ -79,6 +80,8 @@ contract Setup {
     L1Block l1Block = L1Block(Predeploys.L1_BLOCK_ATTRIBUTES);
     LegacyMessagePasser legacyMessagePasser = LegacyMessagePasser(Predeploys.LEGACY_MESSAGE_PASSER);
     GovernanceToken governanceToken = GovernanceToken(Predeploys.GOVERNANCE_TOKEN);
+    IL2ToL2CrossDomainMessenger l2ToL2CrossDomainMessenger =
+        IL2ToL2CrossDomainMessenger(Predeploys.L2_TO_L2_CROSS_DOMAIN_MESSENGER);
 
     /// @dev Deploys the Deploy contract without including its bytecode in the bytecode
     ///      of this contract by fetching the bytecode dynamically using `vm.getCode()`.
@@ -188,5 +191,6 @@ contract Setup {
         vm.label(Predeploys.GOVERNANCE_TOKEN, "GovernanceToken");
         vm.label(Predeploys.EAS, "EAS");
         vm.label(Predeploys.SCHEMA_REGISTRY, "SchemaRegistry");
+        vm.label(Predeploys.L2_TO_L2_CROSS_DOMAIN_MESSENGER, "L2ToL2CrossDomainMessenger");
     }
 }