fix: use OOPIF for webview tag (#13869)

* fix: use OOIF for webview tag

* fix: do not call GetNativeView for webview

* fix: OOIPF webview's WebContents is managed by embedder frame

* fix: guest view can not be focused

* fix: clear zoom controller when guest is destroyed

* fix: implement the webview resize event

The webview is no longer a browser plugin with the resize event, use
ResizeObserver instead.

* test: disable failed tests due to OOPIF webview

* fix: embedder can be destroyed earlier than guest

This happens when embedder is manually destroyed.

* fix: don't double attach

* fix: recreate iframe when webview is reattached

* fix: resize event may happen very early

* test: some tests are working after OOPIF webview

* chore: remove unused browser plugin webview code

* fix: get embedder via closure

When the "destroyed" event is emitted, the entry in guestInstances would be
cleared.

* chore: rename browserPluginNode to internalElement

* test: make the visibilityState test more robust

* chore: guestinstance can not work with OOPIF webview

* fix: element could be detached before got response from browser

atom/browser/common_web_contents_delegate.h

@@ -42,7 +42,8 @@ class CommonWebContentsDelegate
   // Creates a InspectableWebContents object and takes onwership of
   // |web_contents|.
   void InitWithWebContents(content::WebContents* web_contents,
-                           AtomBrowserContext* browser_context);
+                           AtomBrowserContext* browser_context,
+                           bool is_guest);
 
   // Set the window as owner window.
   void SetOwnerWindow(NativeWindow* owner_window);