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

chrome/browser/chromeos/drive/fileapi/fileapi_worker.cc

Index: chrome/browser/chromeos/drive/fileapi/fileapi_worker.cc
diff --git a/chrome/browser/chromeos/drive/fileapi/fileapi_worker.cc b/chrome/browser/chromeos/drive/fileapi/fileapi_worker.cc
index 128b42c1f5b03ba5067a153e7ca3d9447566650d..1df0ae2a755f68187e857a30e334f147d3f861a5 100644
--- a/chrome/browser/chromeos/drive/fileapi/fileapi_worker.cc
+++ b/chrome/browser/chromeos/drive/fileapi/fileapi_worker.cc
@@ -82,9 +82,6 @@ void RunReadDirectoryCallbackWithEntries(
 
     const PlatformFileInfoProto& file_info = resource_entry.file_info();
     entry.is_directory = file_info.is_directory();
-    entry.size = file_info.size();
-    entry.last_modified_time =
-        base::Time::FromInternalValue(file_info.last_modified());
     entries.push_back(entry);
   }