Revert 243816 "[Files.app] Change sort timing during metadata fetch"

> [Files.app] Change sort timing during metadata fetch
> 
> Previously, sort was not started until all the metadata is fetched. When fetching took a time, the user saw unsorted list for a while. With this patch, sort is happened just after every updates. User can see sorted list every time.
> 
> BUG=327479
> TEST=manually tested
> 
> Review URL: https://codereview.chromium.org/113293007

TBR=yoshiki@chromium.org

Review URL: https://codereview.chromium.org/133223002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244082 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244082