Revert 239400 "Revert 239280 "Move more file_util functions to b..."

Broke all bots 9_9

> Revert 239280 "Move more file_util functions to base namespace."
> 
> dbus_unittests started fialing on Linux Tests (dbg)(2) and Linux Tests (dbg)(2)(32).
> This CL is the only in the intersection of CLs in the first failing build on
> the two builders, so giving a speculative revert a try (rlarocque already
> tried a clobber, it didn't help).
> 
> http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests%20%28dbg%29%282%29/builds/41806
> http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests%20%28dbg%29%282%29%2832%29/builds/8544
> 
> 
> > Move more file_util functions to base namespace.
> > 
> > TBR=sky
> > 
> > Review URL: https://codereview.chromium.org/109043002
> 
> TBR=brettw@chromium.org
> 
> Review URL: https://codereview.chromium.org/105823009

TBR=thakis@chromium.org

Review URL: https://codereview.chromium.org/100923007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239401 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239401