Remove many delegates, let's see what breaks

chrome/browser/extensions/api/notifications/extension_notification_handler.h

Index: chrome/browser/extensions/api/notifications/extension_notification_handler.h
diff --git a/chrome/browser/extensions/api/notifications/extension_notification_handler.h b/chrome/browser/extensions/api/notifications/extension_notification_handler.h
index ba098bd9773571eee6aa6a7323534fc609588900..8f8b2952c74fc5d7b0cc3f766a8d90689d549bbd 100644
--- a/chrome/browser/extensions/api/notifications/extension_notification_handler.h
+++ b/chrome/browser/extensions/api/notifications/extension_notification_handler.h
@@ -13,6 +13,10 @@ class Profile;
 
 namespace extensions {
 
+// Exposed publicly for tests.
+// TODO(miguelg) we can probably get rid of this now.
+extern const base::Feature kAllowFullscreenAppNotificationsFeature;
+
 // Handler for notifications shown by extensions. Will be created and owned by
 // the NativeNotificationDisplayService.
 class ExtensionNotificationHandler : public NotificationHandler {
@@ -32,6 +36,8 @@ class ExtensionNotificationHandler : public NotificationHandler {
                int action_index,
                const base::NullableString16& reply) override;
   void OpenSettings(Profile* profile) override;
+  bool ShouldDisplayOnFullScreen(Profile* profile,
+                                 const std::string& origin) const override;
 
  protected:
   // Overriden in unit tests.