Add a migration for the network controller

app/scripts/migrations/014.js

@@ -0,0 +1,34 @@
+const version = 14
+
+/*
+
+This migration removes provider from config and moves it too NetworkController.
+
+*/
+
+const clone = require('clone')
+
+module.exports = {
+  version,
+
+  migrate: function (originalVersionedData) {
+    const versionedData = clone(originalVersionedData)
+    versionedData.meta.version = version
+    try {
+      const state = versionedData.data
+      const newState = transformState(state)
+      versionedData.data = newState
+    } catch (err) {
+      console.warn(`MetaMask Migration #${version}` + err.stack)
+    }
+    return Promise.resolve(versionedData)
+  },
+}
+
+function transformState (state) {
+  const newState = state
+  newState.NetworkController = {}
+  newState.NetworkController.provider = newState.config.provider
+  delete newState.config.provider
+  return newState
+}

app/scripts/migrations/index.js

@@ -24,4 +24,5 @@ module.exports = [
   require('./011'),
   require('./012'),
   require('./013'),
+  require('./014'),
 ]