diff --git a/shell/browser/api/atom_api_web_contents.cc b/shell/browser/api/atom_api_web_contents.cc
index c33747612cd2b..2e792dc4a47ed 100644
--- a/shell/browser/api/atom_api_web_contents.cc
+++ b/shell/browser/api/atom_api_web_contents.cc
@@ -598,6 +598,25 @@ void WebContents::WebContentsCreated(content::WebContents* source_contents,
   tracker->frame_name = frame_name;
 }
 
+bool WebContents::ShouldCreateWebContents(
+    content::WebContents* web_contents,
+    content::RenderFrameHost* opener,
+    content::SiteInstance* source_site_instance,
+    int32_t route_id,
+    int32_t main_frame_route_id,
+    int32_t main_frame_widget_route_id,
+    content::mojom::WindowContainerType window_container_type,
+    const GURL& opener_url,
+    const std::string& frame_name,
+    const GURL& target_url,
+    const std::string& partition_id,
+    content::SessionStorageNamespace* session_storage_namespace) {
+  if (Emit("-will-add-new-contents", target_url, frame_name)) {
+    return false;
+  }
+  return true;
+}
+
 void WebContents::AddNewContents(
     content::WebContents* source,
     std::unique_ptr<content::WebContents> new_contents,
diff --git a/shell/browser/api/atom_api_web_contents.h b/shell/browser/api/atom_api_web_contents.h
index 9de5b327e0760..3047549a60337 100644
--- a/shell/browser/api/atom_api_web_contents.h
+++ b/shell/browser/api/atom_api_web_contents.h
@@ -346,6 +346,19 @@ class WebContents : public mate::TrackableObject<WebContents>,
                               const base::string16& message,
                               int32_t line_no,
                               const base::string16& source_id) override;
+  bool ShouldCreateWebContents(
+      content::WebContents* web_contents,
+      content::RenderFrameHost* opener,
+      content::SiteInstance* source_site_instance,
+      int32_t route_id,
+      int32_t main_frame_route_id,
+      int32_t main_frame_widget_route_id,
+      content::mojom::WindowContainerType window_container_type,
+      const GURL& opener_url,
+      const std::string& frame_name,
+      const GURL& target_url,
+      const std::string& partition_id,
+      content::SessionStorageNamespace* session_storage_namespace) override;
   void WebContentsCreated(content::WebContents* source_contents,
                           int opener_render_process_id,
                           int opener_render_frame_id,