PR 44648: Enabling creation on webview with node-integration disabled and raising events

- Enabling creation on webview with node-integration disabled and raising events

Conflicts:
	lib/browser/guest-view-manager.js

docs/api/web-contents.md

@@ -218,6 +218,17 @@ When in-page navigation happens, the page URL changes but does not cause
 navigation outside of the page. Examples of this occurring are when anchor links
 are clicked or when the DOM `hashchange` event is triggered.
 
+#### Event: 'will-create-webview'
+
+Returns:
+
+* `event` Event
+* `params` Object
+
+Emitted when web-view will be created.
+
+Use this event to remove preload scripts or stop creating webviews.
+
 #### Event: 'crashed'
 
 Returns:

docs/api/webview-tag.md

@@ -15,9 +15,6 @@ between your app and embedded content will be asynchronous. This keeps your app
 safe from the embedded content. **Note:** Most methods called on the
 webview from the host page require a syncronous call to the main process.
 
-For security purposes, `webview` can only be used in `BrowserWindow`s that have
-`nodeIntegration` enabled.
-
 ## Example
 
 To embed a web page in your app, add the `webview` tag to your app's embedder