Remove linked_ptr usage in //base.

components/guest_view/browser/guest_view_base.cc

Index: components/guest_view/browser/guest_view_base.cc
diff --git a/components/guest_view/browser/guest_view_base.cc b/components/guest_view/browser/guest_view_base.cc
index 634b1f7900b7eb7b5798e865f6de57b17037a76e..64b33d55a25da94119471a7492738f48368ca646 100644
--- a/components/guest_view/browser/guest_view_base.cc
+++ b/components/guest_view/browser/guest_view_base.cc
@@ -758,7 +758,7 @@ void GuestViewBase::DispatchEventToGuestProxy(GuestViewEvent* event) {
 void GuestViewBase::DispatchEventToView(GuestViewEvent* event) {
   if (!attached() &&
       (!CanRunInDetachedState() || !can_owner_receive_events())) {
-    pending_events_.push_back(linked_ptr<GuestViewEvent>(event));
+    pending_events_.push_back(make_scoped_ptr(event));
     return;
   }
 
@@ -769,9 +769,9 @@ void GuestViewBase::SendQueuedEvents() {
   if (!attached())
     return;
   while (!pending_events_.empty()) {
-    linked_ptr<GuestViewEvent> event_ptr = pending_events_.front();
+    scoped_ptr<GuestViewEvent> event_ptr = std::move(pending_events_.front());
     pending_events_.pop_front();
-    event_ptr.release()->Dispatch(this, view_instance_id_);

[vmpstr, 2016/01/28 19:53:34]

Just out of curiosity, was this leaking before? My linked_ptr knowledge is poor,
but it seems release would stop managing the memory?

[dcheng, 2016/01/28 20:32:14]

I believe you are correct: the original code leaked.

[Fady Samuel, 2016/01/28 23:29:33]

No, it wasn't. the event self-destructs on dispatch. In fact, this might be
broken now.

+    event_ptr->Dispatch(this, view_instance_id_);
   }
 }