Fix wrong cast in ExtensionsGuestViewContainer.

extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc

Index: extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
diff --git a/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc b/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
index a35eaee36eeddb990c3b6cb2e0de5b3f6f630810..f845d77d90c82f330dab834e2fe91dc8408a94be 100644
--- a/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
+++ b/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
@@ -382,8 +382,8 @@ void GuestViewInternalCustomBindings::RegisterElementResizeCallback(
   int element_instance_id = args[0]->Int32Value();
   // An element instance ID uniquely identifies a ExtensionsGuestViewContainer
   // within a RenderView.
-  auto* guest_view_container = static_cast<ExtensionsGuestViewContainer*>(
-      guest_view::GuestViewContainer::FromID(element_instance_id));
+  auto* guest_view_container =
+      guest_view::GuestViewContainer::FromID(element_instance_id);
   if (!guest_view_container)
     return;