ArbDebug: add overwriteContractCode interface

ArbAggregator.sol

@@ -41,7 +41,10 @@ interface ArbAggregator {
     /// This reverts unless called by the batch poster, its fee collector, or a chain owner
     /// @param batchPoster The batch poster to set the fee collector for
     /// @param newFeeCollector The new fee collector to set
-    function setFeeCollector(address batchPoster, address newFeeCollector) external;
+    function setFeeCollector(
+        address batchPoster,
+        address newFeeCollector
+    ) external;
 
     /// @notice Deprecated, always returns zero
     /// @notice Get the tx base fee (in approximate L1 gas) for aggregator
@@ -56,5 +59,8 @@ interface ArbAggregator {
     /// Revert if feeInL1Gas is outside the chain's allowed bounds
     /// @param aggregator The aggregator to set the fee for
     /// @param feeInL1Gas The base fee in L1 gas
-    function setTxBaseFee(address aggregator, uint256 feeInL1Gas) external;
+    function setTxBaseFee(
+        address aggregator,
+        uint256 feeInL1Gas
+    ) external;
 }

ArbDebug.sol

@@ -12,8 +12,17 @@ interface ArbDebug {
     /// @notice Caller becomes a chain owner
     function becomeChainOwner() external;
 
+    /// @notice Overwrite an existing contract's code
+    function overwriteContractCode(
+        address target,
+        bytes calldata newCode
+    ) external returns (bytes memory oldCode);
+
     /// @notice Emit events with values based on the args provided
-    function events(bool flag, bytes32 value) external payable returns (address, uint256);
+    function events(
+        bool flag,
+        bytes32 value
+    ) external payable returns (address, uint256);
 
     /// @notice Tries (and fails) to emit logs in a view context
     function eventsView() external view;

ArbFunctionTable.sol

@@ -22,5 +22,8 @@ interface ArbFunctionTable {
     ) external view returns (uint256);
 
     /// @notice No-op
-    function get(address addr, uint256 index) external view returns (uint256, bool, uint256);
+    function get(
+        address addr,
+        uint256 index
+    ) external view returns (uint256, bool, uint256);
 }

ArbOwner.sol

@@ -121,7 +121,10 @@ interface ArbOwner {
     ) external;
 
     /// @notice Upgrades ArbOS to the requested version at the requested timestamp
-    function scheduleArbOSUpgrade(uint64 newVersion, uint64 timestamp) external;
+    function scheduleArbOSUpgrade(
+        uint64 newVersion,
+        uint64 timestamp
+    ) external;
 
     /// @notice Sets equilibration units parameter for L1 price adjustment algorithm
     function setL1PricingEquilibrationUnits(
@@ -217,7 +220,10 @@ interface ArbOwner {
     /// @notice Available in ArbOS version 30 and above
     /// @param gas amount of gas paid in increments of 256 when not the program is not cached
     /// @param cached amount of gas paid in increments of 64 when the program is cached
-    function setWasmMinInitGas(uint8 gas, uint16 cached) external;
+    function setWasmMinInitGas(
+        uint8 gas,
+        uint16 cached
+    ) external;
 
     /// @notice Sets the linear adjustment made to program init costs.
     /// @notice Available in ArbOS version 30 and above

ArbStatistics.sol

@@ -15,8 +15,5 @@ interface ArbStatistics {
     ///      Number of transaction receipt issued,
     ///      Number of contracts created,
     ///    )
-    function getStats()
-        external
-        view
-        returns (uint256, uint256, uint256, uint256, uint256, uint256);
+    function getStats() external view returns (uint256, uint256, uint256, uint256, uint256, uint256);
 }