Get rid of unused function, UTF8ToFilePathString.
Get rid of unused function, UTF8ToFilePathString.

BUG=none
TEST=none

Original patch by hayato@google.com via:
http://codereview.chromium.org/384003

Review URL: http://codereview.chromium.org/388010

git-svn-id: http://src.chromium.org/svn/trunk/src@31579 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 176eaf47561713d661f7ba9ed18375add2f0b42e
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser