Add devtools from web-contents-created event

lib/browser/chrome-extension.js

@@ -222,6 +222,13 @@ const loadDevToolsExtensions = function (win, manifests) {
   win.devToolsWebContents.executeJavaScript(`DevToolsAPI.addExtensions(${JSON.stringify(extensionInfoArray)})`)
 }
 
+webContents.on('web-contents-created', function (webContents) {
+  hookWindowForTabEvents(webContents)
+  webContents.on('devtools-opened', function () {
+    loadDevToolsExtensions(webContents, objectValues(manifestMap))
+  })
+})
+
 // The persistent path of "DevTools Extensions" preference file.
 let loadedExtensionsPath = null
 
@@ -312,18 +319,4 @@ app.once('ready', function () {
     delete manifestMap[manifest.extensionId]
     delete manifestNameMap[name]
   }
-
-  // Load extensions automatically when devtools is opened.
-  const init = BrowserWindow.prototype._init
-  BrowserWindow.prototype._init = function () {
-    init.call(this)
-    exports.loadDevToolsExtensions(this.webContents)
-  }
 })
-
-exports.loadDevToolsExtensions = function (webContents) {
-  hookWindowForTabEvents(webContents)
-  webContents.on('devtools-opened', function () {
-    loadDevToolsExtensions(webContents, objectValues(manifestMap))
-  })
-}