Revert 235033 "Remove the flag --enable-translate-new-ux"

That change was already committed on M-32. Let's revert this.

> Remove the flag --enable-translate-new-ux
> 
> Since the crashes caused by the bubble are reported many times, I'll remove the flag from the list of about:flags once.
> 
> This CL is intended to be landed on M32 (beta).
> 
> BUG=318355
> TEST=manual
> TBR=sky@chromium.org
> NOTRY=true
> 
> Review URL: https://codereview.chromium.org/69863004

TBR=hajimehoshi@chromium.org

Review URL: https://codereview.chromium.org/62883003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235593 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235593