Fix interstitials on OOPIF-based guests.

content/browser/frame_host/render_widget_host_view_child_frame.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 "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 66 matching lines @@
     CrossProcessFrameConnector* frame_connector) {
   if (frame_connector_ == frame_connector)
     return;
 
   if (frame_connector_) {
     if (parent_frame_sink_id_.is_valid()) {
       GetSurfaceManager()->UnregisterFrameSinkHierarchy(parent_frame_sink_id_,
                                                         frame_sink_id_);
     }
     parent_frame_sink_id_ = cc::FrameSinkId();
+    local_surface_id_ = cc::LocalSurfaceId();
 
     // Unlocks the mouse if this RenderWidgetHostView holds the lock.
     UnlockMouse();
   }
   frame_connector_ = frame_connector;
   if (frame_connector_) {
     RenderWidgetHostViewBase* parent_view =
         frame_connector_->GetParentRenderWidgetHostView();
     if (parent_view) {
       parent_frame_sink_id_ = parent_view->GetFrameSinkId();
@@ skipping 598 matching lines @@
                                                       frame_sink_id_);
   }
   support_.reset();
 }
 
 bool RenderWidgetHostViewChildFrame::HasEmbedderChanged() {
   return false;
 }
 
 }  // namespace content