Media galleries preferences also needs to track file counts for scan results.

chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc

Index: chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
diff --git a/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc b/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
index 6da63e9dbc920a0dd4725b18dc5379154ce4e653..35d29138bf0881acd19da525540b57a94221c71a 100644
--- a/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
+++ b/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
@@ -159,7 +159,8 @@ class MediaGalleriesPlatformAppBrowserTest : public PlatformAppBrowserTest {
                             gallery_info.vendor_name,
                             gallery_info.model_name,
                             gallery_info.total_size_in_bytes,
-                            gallery_info.last_attach_time);
+                            gallery_info.last_attach_time,
+                            0, 0, 0);
 
     content::RunAllPendingInMessageLoop();