Remove V8RecrusionScope, cleanup call sites.

components/guest_view/renderer/guest_view_container.cc

Index: components/guest_view/renderer/guest_view_container.cc
diff --git a/components/guest_view/renderer/guest_view_container.cc b/components/guest_view/renderer/guest_view_container.cc
index c410c6f67789f17787657c550e173a06c8b64de4..4d8df382fbe64f00cf9094f30f1bc06c547f8cb4 100644
--- a/components/guest_view/renderer/guest_view_container.cc
+++ b/components/guest_view/renderer/guest_view_container.cc
@@ -11,7 +11,6 @@
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/public/renderer/render_view.h"
-#include "third_party/WebKit/public/web/WebScopedMicrotaskSuppression.h"
 
 namespace {
 
@@ -154,7 +153,7 @@ void GuestViewContainer::HandlePendingResponseCallback(
 void GuestViewContainer::RunDestructionCallback(bool embedder_frame_destroyed) {
   // Do not attempt to run |destruction_callback_| if the embedder frame was
   // destroyed. Trying to invoke callback on RenderFrame destruction results in
-  // assertion failure when calling WebScopedMicrotaskSuppression.
+  // assertion failure when calling v8::MicrotasksScope.
   if (embedder_frame_destroyed)
     return;
 
@@ -168,7 +167,8 @@ void GuestViewContainer::RunDestructionCallback(bool embedder_frame_destroyed) {
       return;
 
     v8::Context::Scope context_scope(context);
-    blink::WebScopedMicrotaskSuppression suppression;
+    v8::MicrotasksScope microtasks(
+        destruction_isolate_, v8::MicrotasksScope::kDoNotRunMicrotasks);
 
     callback->Call(context->Global(), 0 /* argc */, nullptr);
   }