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

storage/browser/fileapi/async_file_util_adapter.cc

Index: storage/browser/fileapi/async_file_util_adapter.cc
diff --git a/storage/browser/fileapi/async_file_util_adapter.cc b/storage/browser/fileapi/async_file_util_adapter.cc
index ed8f84f9a72866836ff7dbc0744ad66d0566d6f0..0de0f611ea514b757e77f989f84f4662decf248d 100644
--- a/storage/browser/fileapi/async_file_util_adapter.cc
+++ b/storage/browser/fileapi/async_file_util_adapter.cc
@@ -116,8 +116,6 @@ void ReadDirectoryHelper(FileSystemFileUtil* file_util,
     DirectoryEntry entry;
     entry.is_directory = file_enum->IsDirectory();
     entry.name = VirtualPath::BaseName(current).value();
-    entry.size = file_enum->Size();
-    entry.last_modified_time = file_enum->LastModifiedTime();
     entries.push_back(entry);
 
     if (entries.size() == kResultChunkSize) {