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

storage/common/fileapi/directory_entry.h

Index: storage/common/fileapi/directory_entry.h
diff --git a/storage/common/fileapi/directory_entry.h b/storage/common/fileapi/directory_entry.h
index 1b06828efdf7e7480d2694ab23a3d4bec19b9784..fab7fae181f42415966b22065d3c8bfdaafb4f9a 100644
--- a/storage/common/fileapi/directory_entry.h
+++ b/storage/common/fileapi/directory_entry.h
@@ -22,15 +22,10 @@ struct STORAGE_COMMON_EXPORT DirectoryEntry {
   };
 
   DirectoryEntry();
-  DirectoryEntry(const std::string& name,
-                 DirectoryEntryType type,
-                 int64 size,
-                 const base::Time& last_modified_time);
+  DirectoryEntry(const std::string& name, DirectoryEntryType type);
 
   base::FilePath::StringType name;
   bool is_directory;
-  int64 size;
-  base::Time last_modified_time;
 };
 
 }  // namespace storage