One more try to get the FilePath usage right.
One more try to get the FilePath usage right.

I was using:
  FilePath("/")

This only works on linux/mac because it is an ascii string and can't be
coerced to a wide string.

Reworked the code to put the hack into the string portion.

BUG=none
TEST=none



Review URL: http://codereview.chromium.org/270035

git-svn-id: http://src.chromium.org/svn/trunk/src@28497 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 0b25d6ba8580891446082c8c394f8d1306a90b06
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