Forward will/did navigate events to extensions

lib/renderer/extensions/web-navigation.js

@@ -1,5 +1,21 @@
 const Event = require('./event')
+const {ipcRenderer} = require('electron')
 
-exports.onBeforeNavigate = new Event()
+class WebNavigation {
+  constructor () {
+    this.onBeforeNavigate = new Event()
+    this.onCompleted = new Event()
 
-exports.onCompleted = new Event()
+    ipcRenderer.on('CHROME_WEBNAVIGATION_ONBEFORENAVIGATE', (event, details) => {
+      this.onBeforeNavigate.emit(details)
+    })
+
+    ipcRenderer.on('CHROME_WEBNAVIGATION_ONCOMPLETED', (event, details) => {
+      this.onCompleted.emit(details)
+    })
+  }
+}
+
+exports.setup = () => {
+  return new WebNavigation()
+}