Do not call stat() when reading directories via File API.

chrome/browser/media_galleries/mac/mtp_device_delegate_impl_mac.mm

Index: chrome/browser/media_galleries/mac/mtp_device_delegate_impl_mac.mm
diff --git a/chrome/browser/media_galleries/mac/mtp_device_delegate_impl_mac.mm b/chrome/browser/media_galleries/mac/mtp_device_delegate_impl_mac.mm
index 89e51088bc73b7f9a297863359d2e53bc203c730..743866b783f43f5285d44aa2b8947e5aa7a1398f 100644
--- a/chrome/browser/media_galleries/mac/mtp_device_delegate_impl_mac.mm
+++ b/chrome/browser/media_galleries/mac/mtp_device_delegate_impl_mac.mm
@@ -467,8 +467,6 @@ void MTPDeviceDelegateImplMac::NotifyReadDir() {
       storage::DirectoryEntry entry;
       entry.name = relative_path.value();
       entry.is_directory = info.is_directory;
-      entry.size = info.size;
-      entry.last_modified_time = info.last_modified;
       entry_list.push_back(entry);
     }