Fix interstitials on OOPIF-based guests.

content/browser/renderer_host/render_widget_host_input_event_router.cc

Index: content/browser/renderer_host/render_widget_host_input_event_router.cc
diff --git a/content/browser/renderer_host/render_widget_host_input_event_router.cc b/content/browser/renderer_host/render_widget_host_input_event_router.cc
index f5553526d6c6834dbf18559dc4fd621d31a326c5..7f11483bd5fa7eb8b92a9189357d13943070e64a 100644
--- a/content/browser/renderer_host/render_widget_host_input_event_router.cc
+++ b/content/browser/renderer_host/render_widget_host_input_event_router.cc
@@ -831,4 +831,13 @@ void RenderWidgetHostInputEventRouter::RouteTouchpadGestureEvent(
   touchpad_gesture_target_.target->ProcessGestureEvent(*event, latency);
 }
 
+std::vector<RenderWidgetHostView*>
+RenderWidgetHostInputEventRouter::GetRenderWidgetHostViewsForTests() const {
+  std::vector<RenderWidgetHostView*> hosts;
+  for (auto entry : owner_map_)
+    hosts.push_back(entry.second);
+
+  return hosts;
+}
+
 }  // namespace content