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 07c1fed52a1b763dac92631e6b0df7f503b2eb59..a90c42dae6b09858377518a5e04560ffe2bf3f80 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
@@ -829,4 +829,13 @@ 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