Revert 242454 "Revert 242450 "Update some uses of UTF conversion..."

> Revert 242450 "Update some uses of UTF conversions in chrome/bro..."
> 
> > Update some uses of UTF conversions in chrome/browser to use the base:: namespace.
> > 
> > BUG=330556
> > TEST=no change
> > TBR=ben@chromium.org
> > 
> > Review URL: https://codereview.chromium.org/120953002
> 
> TBR=avi@chromium.org
> 
> Review URL: https://codereview.chromium.org/107423005

TBR=avi@chromium.org

Review URL: https://codereview.chromium.org/121003002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242464 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242464