Add mainnet deployment addresses for Dai, Chai, and ERC20BridgeProxy

contracts/utils/contracts/src/DeploymentConstants.sol

@@ -32,6 +32,12 @@ contract DeploymentConstants {
     address constant private UNISWAP_EXCHANGE_FACTORY_ADDRESS = 0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95;
     /// @dev Mainnet address of the Eth2Dai `MatchingMarket` contract.
     address constant private ETH2DAI_ADDRESS = 0x39755357759cE0d7f32dC8dC45414CCa409AE24e;
+    /// @dev Mainnet address of the `ERC20BridgeProxy` contract
+    address constant private ERC20_BRIDGE_PROXY_ADDRESS = 0x8ED95d1746bf1E4dAb58d8ED4724f1Ef95B20Db0;
+    ///@dev Mainnet address of the `Dai` (multi-collateral) contract
+    address constant private DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
+    /// @dev Mainnet address of the `Chai` contract
+    address constant private CHAI_ADDRESS = 0x06AF07097C9Eeb7fD685c692751D5C66dB49c215;
 
     /// @dev Overridable way to get the `KyberNetworkProxy` address.
     /// @return kyberAddress The `IKyberNetworkProxy` address.
@@ -45,7 +51,7 @@ contract DeploymentConstants {
 
     /// @dev Overridable way to get the WETH address.
     /// @return wethAddress The WETH address.
-    function _getWETHAddress()
+    function _getWethAddress()
         internal
         view
         returns (address wethAddress)
@@ -72,4 +78,34 @@ contract DeploymentConstants {
     {
         return ETH2DAI_ADDRESS;
     }
+
+    /// @dev An overridable way to retrieve the `ERC20BridgeProxy` contract.
+    /// @return erc20BridgeProxyAddress The `ERC20BridgeProxy` contract.
+    function _getERC20BridgeProxyAddress()
+        internal
+        view
+        returns (address erc20BridgeProxyAddress)
+    {
+        return ERC20_BRIDGE_PROXY_ADDRESS;
+    }
+
+    /// @dev An overridable way to retrieve the `Dai` contract.
+    /// @return daiAddress The `Dai` contract.
+    function _getDaiAddress()
+        internal
+        view
+        returns (address daiAddress)
+    {
+        return DAI_ADDRESS;
+    }
+
+    /// @dev An overridable way to retrieve the `Chai` contract.
+    /// @return chaiAddress The `Chai` contract.
+    function _getChaiAddress()
+        internal
+        view
+        returns (address chaiAddress)
+    {
+        return CHAI_ADDRESS;
+    }
 }