WebUI: Fix lifecycle-bug when RenderFrameHost is swapped out

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/render_frame_host_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 1253 matching lines @@
 
   set_render_frame_proxy_host(proxy);
 
   if (IsRenderFrameLive()) {
     FrameReplicationState replication_state =
         proxy->frame_tree_node()->current_replication_state();
     Send(new FrameMsg_SwapOut(routing_id_, proxy->GetRoutingID(), is_loading,
                               replication_state));
   }
 
+  if (web_ui())
+    web_ui()->RenderFrameHostSwappingOut();
+
   // TODO(nasko): If the frame is not live, the RFH should just be deleted by
   // simulating the receipt of swap out ack.
   is_waiting_for_swapout_ack_ = true;
   if (frame_tree_node_->IsMainFrame())
     render_view_host_->set_is_active(false);
 }
 
 void RenderFrameHostImpl::OnBeforeUnloadACK(
     bool proceed,
     const base::TimeTicks& renderer_before_unload_start_time,
@@ skipping 1574 matching lines @@
   // handler after it's destroyed so it can't run after the RFHI is destroyed.
   web_bluetooth_service_->SetClientConnectionErrorHandler(base::Bind(
       &RenderFrameHostImpl::DeleteWebBluetoothService, base::Unretained(this)));
 }
 
 void RenderFrameHostImpl::DeleteWebBluetoothService() {
   web_bluetooth_service_.reset();
 }
 
 }  // namespace content