Try run for https://codereview.chromium.org/426593007.

chrome/browser/guest_view/guest_view_manager.cc

Index: chrome/browser/guest_view/guest_view_manager.cc
diff --git a/chrome/browser/guest_view/guest_view_manager.cc b/chrome/browser/guest_view/guest_view_manager.cc
index ac5473534c3242fd87738bb05c87c75d01e2ebfc..ba38ebae4f4404ff27b2091bb722436f99270c7d 100644
--- a/chrome/browser/guest_view/guest_view_manager.cc
+++ b/chrome/browser/guest_view/guest_view_manager.cc
@@ -65,12 +65,12 @@ int GuestViewManager::GetNextInstanceID() {
   return ++current_instance_id_;
 }
 
-void GuestViewManager::CreateGuest(
-    const std::string& view_type,
-    const std::string& embedder_extension_id,
-    int embedder_render_process_id,
-    const base::DictionaryValue& create_params,
-    const WebContentsCreatedCallback& callback) {
+void GuestViewManager::CreateGuest(const std::string& view_type,
+                                   const std::string& embedder_extension_id,
+                                   int embedder_render_process_id,
+                                   content::WebContents* embedder_web_contents,
+                                   const base::DictionaryValue& create_params,
+                                   const WebContentsCreatedCallback& callback) {
   int guest_instance_id = GetNextInstanceID();
   GuestViewBase* guest =
       GuestViewBase::Create(context_, guest_instance_id, view_type);
@@ -80,6 +80,7 @@ void GuestViewManager::CreateGuest(
   }
   guest->Init(embedder_extension_id,
               embedder_render_process_id,
+              embedder_web_contents,
               create_params,
               callback);
 }