Implement CWrappedNativeDelegator

contracts/CCapableWrappedNativeDelegate.sol

@@ -0,0 +1,50 @@
+pragma solidity ^0.5.16;
+
+import "./CCapableErc20.sol";
+
+/**
+ * @title Compound's CCapableWrappedNativeDelegate Contract
+ * @notice CTokens which wrap an EIP-20 underlying and are delegated to
+ * @author Compound
+ */
+contract CCapableWrappedNativeDelegate is CCapableErc20 {
+    /**
+     * @notice Construct an empty delegate
+     */
+    constructor() public {}
+
+    /**
+     * @notice Called by the delegator on a delegate to initialize it for duty
+     * @param data The encoded bytes data for any initialization
+     */
+    function _becomeImplementation(bytes memory data) public {
+        // Shh -- currently unused
+        data;
+
+        // Shh -- we don't ever want this hook to be marked pure
+        if (false) {
+            implementation = address(0);
+        }
+
+        require(msg.sender == admin, "only the admin may call _becomeImplementation");
+
+        // Set internal cash when becoming implementation
+        internalCash = getCashOnChain();
+    }
+
+    /**
+     * @notice Called by the delegator on a delegate to forfeit its responsibility
+     */
+    function _resignImplementation() public {
+        // Shh -- we don't ever want this hook to be marked pure
+        if (false) {
+            implementation = address(0);
+        }
+
+        require(msg.sender == admin, "only the admin may call _resignImplementation");
+    }
+
+    function () external payable {
+        require(msg.value == 0,"CCapableWrappedNativeDelegate: not implemented yet");
+    }
+}