Remove linked_ptr usage in //base.

components/guest_view/browser/guest_view_event.cc

Index: components/guest_view/browser/guest_view_event.cc
diff --git a/components/guest_view/browser/guest_view_event.cc b/components/guest_view/browser/guest_view_event.cc
index f564753d81921f14faceea994fe9cc3e7c6a60af..883b8b7f7718fb4d83b227e71506bf8192b48336 100644
--- a/components/guest_view/browser/guest_view_event.cc
+++ b/components/guest_view/browser/guest_view_event.cc
@@ -6,6 +6,7 @@
 
 #include <utility>
 
+#include "base/logging.h"
 #include "components/guest_view/browser/guest_view_base.h"
 #include "components/guest_view/browser/guest_view_manager.h"
 
@@ -19,10 +20,9 @@ GuestViewEvent::~GuestViewEvent() {
 }
 
 void GuestViewEvent::Dispatch(GuestViewBase* guest, int instance_id) {
+  DCHECK(args_) << "Dispatch was probably invoked twice!";
   GuestViewManager::FromBrowserContext(guest->browser_context())
       ->DispatchEvent(name_, std::move(args_), guest, instance_id);
-
-  delete this;
 }
 
 }  // namespace guest_view