use new nodeify

app/scripts/lib/nodeify.js

@@ -1,24 +1,9 @@
-module.exports = function (promiseFn) {
-  return function () {
-    var args = []
-    for (var i = 0; i < arguments.length - 1; i++) {
-      args.push(arguments[i])
-    }
-    var cb = arguments[arguments.length - 1]
+const promiseToCallback = require('promise-to-callback');
 
-    const nodeified = promiseFn.apply(this, args)
-
-    if (!nodeified) {
-      const methodName = String(promiseFn).split('(')[0]
-      throw new Error(`The ${methodName} did not return a Promise, but was nodeified.`)
-    }
-    nodeified.then(function (result) {
-      cb(null, result)
-    })
-    .catch(function (reason) {
-      cb(reason)
-    })
-
-    return nodeified
+module.exports = function(fn, context) {
+  return function(){
+    const args = [].slice.call(arguments)
+    const callback = args.pop()
+    promiseToCallback(fn.apply(context, args))(callback)
   }
 }

app/scripts/metamask-controller.js

@@ -294,34 +294,33 @@ module.exports = class MetamaskController extends EventEmitter {
       submitPassword: this.submitPassword.bind(this),
 
       // PreferencesController
-      setSelectedAddress: nodeify(preferencesController.setSelectedAddress).bind(preferencesController),
-      addToken: nodeify(preferencesController.addToken).bind(preferencesController),
-      setCurrentAccountTab: nodeify(preferencesController.setCurrentAccountTab).bind(preferencesController),
-      setDefaultRpc: nodeify(this.setDefaultRpc).bind(this),
-      setCustomRpc: nodeify(this.setCustomRpc).bind(this),
+      setSelectedAddress: nodeify(preferencesController.setSelectedAddress, preferencesController),
+      addToken: nodeify(preferencesController.addToken, preferencesController),
+      setCurrentAccountTab: nodeify(preferencesController.setCurrentAccountTab, preferencesController),
+      setDefaultRpc: nodeify(this.setDefaultRpc, this),
+      setCustomRpc: nodeify(this.setCustomRpc, this),
 
       // AddressController
-      setAddressBook: nodeify(addressBookController.setAddressBook).bind(addressBookController),
+      setAddressBook: nodeify(addressBookController.setAddressBook, addressBookController),
 
       // KeyringController
-      setLocked: nodeify(keyringController.setLocked).bind(keyringController),
-      createNewVaultAndKeychain: nodeify(keyringController.createNewVaultAndKeychain).bind(keyringController),
-      createNewVaultAndRestore: nodeify(keyringController.createNewVaultAndRestore).bind(keyringController),
-      addNewKeyring: nodeify(keyringController.addNewKeyring).bind(keyringController),
-      saveAccountLabel: nodeify(keyringController.saveAccountLabel).bind(keyringController),
-      exportAccount: nodeify(keyringController.exportAccount).bind(keyringController),
+      setLocked: nodeify(keyringController.setLocked, keyringController),
+      createNewVaultAndKeychain: nodeify(keyringController.createNewVaultAndKeychain, keyringController),
+      createNewVaultAndRestore: nodeify(keyringController.createNewVaultAndRestore, keyringController),
+      addNewKeyring: nodeify(keyringController.addNewKeyring, keyringController),
+      saveAccountLabel: nodeify(keyringController.saveAccountLabel, keyringController),
+      exportAccount: nodeify(keyringController.exportAccount, keyringController),
 
       // txController
-      approveTransaction: nodeify(txController.approveTransaction).bind(txController),
       cancelTransaction: txController.cancelTransaction.bind(txController),
-      updateAndApproveTransaction: this.updateAndApproveTx.bind(this),
+      updateAndApproveTransaction: nodeify(txController.updateAndApproveTransaction, txController),
 
       // messageManager
-      signMessage: nodeify(this.signMessage).bind(this),
+      signMessage: nodeify(this.signMessage, this),
       cancelMessage: this.cancelMessage.bind(this),
 
       // personalMessageManager
-      signPersonalMessage: nodeify(this.signPersonalMessage).bind(this),
+      signPersonalMessage: nodeify(this.signPersonalMessage, this),
       cancelPersonalMessage: this.cancelPersonalMessage.bind(this),
 
       // notices
@@ -502,13 +501,6 @@ module.exports = class MetamaskController extends EventEmitter {
     })
   }
 
-  updateAndApproveTx (txMeta, cb) {
-    log.debug(`MetaMaskController - updateAndApproveTx: ${JSON.stringify(txMeta)}`)
-    const txController = this.txController
-    txController.updateTx(txMeta)
-    txController.approveTransaction(txMeta.id, cb)
-  }
-
   signMessage (msgParams, cb) {
     log.info('MetaMaskController - signMessage')
     const msgId = msgParams.metamaskId