GuestView: Fix message routing across embedder navigations

extensions/renderer/guest_view/guest_view_container.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/renderer/guest_view/guest_view_container.h"
 
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/public/renderer/render_view.h"
 #include "extensions/common/guest_view/guest_view_constants.h"
@@ skipping 21 matching lines @@
     content::RenderFrame* render_frame)
     : content::RenderFrameObserver(render_frame),
       container_(container) {}
 
 void GuestViewContainer::RenderFrameLifetimeObserver::OnDestruct() {
   container_->RenderFrameDestroyed();
 }
 
 GuestViewContainer::GuestViewContainer(content::RenderFrame* render_frame)
     : element_instance_id_(guestview::kInstanceIDNone),
-      render_view_routing_id_(render_frame->GetRenderView()->GetRoutingID()),
       render_frame_(render_frame) {
   render_frame_lifetime_observer_.reset(
       new RenderFrameLifetimeObserver(this, render_frame_));
 }
 
 GuestViewContainer::~GuestViewContainer() {}
 
 // static.
 bool GuestViewContainer::HandlesMessage(const IPC::Message& msg) {
   switch (msg.type()) {
@@ skipping 11 matching lines @@
   OnRenderFrameDestroyed();
   render_frame_ = nullptr;
 }
 
 void GuestViewContainer::SetElementInstanceID(int element_instance_id) {
   DCHECK_EQ(element_instance_id_, guestview::kInstanceIDNone);
   element_instance_id_ = element_instance_id;
 }
 
 }  // namespace extensions